Defn: A description of the organs of animals or plants.
ORGANOLEPTICOr`ga*no*lep"tic, a. Etym: [F. organoleptique, fr. Gr. (Physiol.)
Defn: Making an impression upon an organ; plastic; — said of the effect or impression produced by any substance on the organs of touch, taste, or smell, and also on the organism as a whole.
ORGANOLOGICALOr`ga*no*log"ic*al, a.
Defn: Of or relating to organology.
ORGANOLOGYOr`ga*nol"o*gy, n. Etym: [Organ + -logy: cf. F. organologie.]
1. The science of organs or of anything considered as an organic structure. The science of style, as an organ of thought, of style in relation to the ideas and feelings, might be called the organology of style. De Quincey.
2. That branch of biology which treats, in particular, of the organs of animals and plants. See Morphology.
ORGANOMETALLICOr`ga*no*me*tal"lic, a. (Chem.)
Defn: Metalorganic.
ORGANON; ORGANUMOr"ga*non, Or"ga*num, n. Etym: [NL. organon, L. organum. See Organ.]
Defn: An organ or instrument; hence, a method by which philosophical or scientific investigation may be conducted; — a term adopted from the Aristotelian writers by Lord Bacon, as the title ("Novum Organon") of part of his treatise on philosophical method. Sir. W. Hamilton.
ORGANONYMYOr`ga*non"y*my, n. Etym: [Organo- + Gr. (Biol.)
Defn: The designation or nomenclature of organs. B. G. Wilder.
ORGANOPHYLYOr`ga*noph"y*ly, n. Etym: [Organo- + Gr. (Biol.)
Defn: The tribal history of organs, — a branch of morphophyly.Haeckel.
ORGANOPLASTICOr`ga*no*plas"tic, a. Etym: [Organo- + -plastic.] (Biol.)
Defn: Having the property of producing the tissues or organs of animals and plants; as, the organoplastic cells.
ORGANOSCOPYOr`ga*nos"co*py, n. Etym: [Organo- + -scopy.]
Defn: Phrenology. Fleming.
ORGANOTROPHICOr`ga*no*troph"ic, a. Etym: [Organo- + Gr. (Biol.)
Defn: Relating to the creation, organization, and nutrition of living organs or parts.
ORGANULEOr"gan*ule, n. Etym: [Dim. of organ.] (Anat.)
Defn: One of the essential cells or elements of an organ. See Sense organule, under Sense. Huxley.
ORGANYOr"ga*ny, n. Etym: [AS. Organe, from the Latin. See Origan.] (Bot.)
Defn: See Origan.
ORGANZINE Or"gan*zine, n. Etym: [F. organsin; cf. Sp. organsino, It. organzino.]
Defn: A kind of double thrown silk of very fine texture, that is, silk twisted like a rope with different strands, so as to increase its strength.
ORGASMOr"gasm, n. Etym: [F. orgasme; cf. Gr. (Physiol.)
Defn: Eager or immoderate excitement or action; the state of turgescence of any organ; erethism; esp., the height of venereal excitement in sexual intercourse.
ORGEATOr"geat, n. Etym: [F., fr. orge barley, L. hordeum.]
Defn: A sirup in which, formerly, a decoction of barley entered, but which is now prepared with an emulsion of almonds, — used to flavor beverages or edibles.
ORGEISOr"ge*is, n. (Zoöl.)
Defn: See Organling.
ORGIASTICOr`gi*as"tic, a. Etym: [Gr. Orgy.]
Defn: Pertaining to, or of the nature of, orgies. Elton.
ORGIESOr"gies, n. pl.; sing. Orgy (.
Note: [The singular is rarely used.] Etym: [F. orgie, orgies, L. orgia, pl., Gr. Organ, and Work.]
1. A sacrifice accompanied by certain ceremonies in honor of some pagan deity; especially, the ceremonies observed by the Greeks and Romans in the worship of Dionysus, or Bacchus, which were characterized by wild and dissolute revelry. As when, with crowned cups, unto the Elian god, Those priests high orgies held. Drayton.
2. Drunken revelry; a carouse. B. Jonson. Tennyson.
ORGILLOUS Or"gil*lous, a. Etym: [OF. orguillous, F. orgueilleux, fr. OF. orgoil pride, F. orgueil.]
Defn: Proud; haughty. [Obs.] Shak.
ORGUE Orgue, n. Etym: [F., fr. L. organum organ, Gr. Organ.] (Mil.) (a) Any one of a number of long, thick pieces of timber, pointed and shod with iron, and suspended, each by a separate rope, over a gateway, to be let down in case of attack. (b) A piece of ordnance, consisting of a number of musket barrels arranged so that a match or train may connect with all their touchholes, and a discharge be secured almost or quite simultaneously.
ORGULOUSOr"gu*lous, a.
Defn: See Orgillous. [Obs.]
ORGYOr"gy, n.; pl. Orgies (.
Defn: A frantic revel; drunken revelry. See Orgies
ORGYIAOr*gy"i*a (, n. Etym: [NL., fr. Gr. (Zoöl.).
Defn: A genus of bombycid moths whose caterpillars (esp. those of Orgyia leucostigma) are often very injurious to fruit trees and shade trees. The female is wingless. Called also vaporer moth.
ORICALCHEOr"i*calche, n. [Obs.]
Defn: See Orichalch.Costly oricalche from strange Phoenice. Spenser.
ORICHALCEOUSOr`i*chal"ce*ous, a.
Defn: Pertaining to, or resembling, orichalch; having a color or luster like that of brass. Maunder.
ORICHALCHOr"i*chalch, n. Etym: [L. orichalcum, Gr. orichalque.]
Defn: A metallic substance, resembling gold in color, but inferior in value; a mixed metal of the ancients, resembling brass; — called also aurichalcum, orichalcum, etc.
ORIEL O"ri*el, n. Etym: [OF. oriol gallery, corridor, LL. oriolum portico, hall, prob. fr. L. aureolus gilded, applied to an apartment decorated with gilding. See Oriole.] [Formerly written also oriol, oryal, oryall.]
1. A gallery for minstrels. [Obs.] W. Hamper.
2. A small apartment next a hall, where certain persons were accustomed to dine; a sort of recess. [Obs.] Cowell.
3. (Arch.)
Defn: A bay window. See Bay window. The beams that thro' the oriel shine Make prisms in every carven glass. Tennyson.
Note: There is no generally admitted difference between a bay window and an oriel. In the United States the latter name is often applied to bay windows which are small, and either polygonal or round; also, to such as are corbeled out from the wall instead of resting on the ground.
ORIENCYO"ri*en*cy, n. Etym: [See Orient.]
Defn: Brightness or strength of color. [R.] E. Waterhouse.
ORIENT O"ri*ent, a. Etym: [F., fr. L. oriens, -entis, p. pr. of oriri to rise. See Origin.]
1. Rising, as the sun. Moon, that now meet'st the orient sun. Milton.
2. Eastern; oriental. "The orient part." Hakluyt.
3. Bright; lustrous; superior; pure; perfect; pellucid; — used of gems and also figuratively, because the most perfect jewels are found in the East. "Pearls round and orient." Jer. Taylor. "Orient gems." Wordsworth. "Orient liquor in a crystal glass." Milton.
ORIENTO"ri*ent, n.
1. The part of the horizon where the sun first appears in the morning; the east. [Morn] came furrowing all the orient into gold. Tennyson.
2. The countries of Asia or the East. Chaucer. Best built city throughout the Orient. Sir T. Herbert.
3. A pearl of great luster. [R.] Carlyle.
ORIENTO"ri*ent, v. t. Etym: [F. orienter. Cf. Orientate.]
1. To define the position of, in relation to the orient or east; hence, to ascertain the bearings of.
2. Fig.: To correct or set right by recurring to first principles; to arrange in order; to orientate.
ORIENTALO`ri*en"tal, a. Etym: [L. orientalis: cf. F. oriental.]
Defn: Of or pertaining to the orient or east; eastern; concerned withthe East or Orientalism; — opposed to occidental; as, Orientalcountries.The sun's ascendant and oriental radiations. Sir T. Browne.
ORIENTALO`ri*en"tal, n.
1. A native or inhabitant of the Orient or some Eastern part of the world; an Asiatic.
2. pl. (Eccl.)
Defn: Eastern Christians of the Greek rite.
ORIENTALISMO`ri*en"tal*ism, n. Etym: [Cf. F. orientalisme.]
1. Any system, doctrine, custom, expression, etc., peculiar to Oriental people.
2. Knowledge or use of Oriental languages, history, literature, etc. London Quart. Rev.
ORIENTALISTO`ri*en"tal*ist, n. Etym: [Cf. F. orientaliste.]
1. An inhabitant of the Eastern parts of the world; an Oriental.
2. One versed in Eastern languages, literature, etc.; as, the Paris Congress of Orientalists. Sir J. Shore.
ORIENTALITYO`ri*en*tal"i*ty, n.
Defn: The quality or state of being oriental or eastern. Sir T.Browne.
ORIENTALIZEO`ri*en"tal*ize, v. t. [imp. & p. p. Orientalized; p. pr. & vb. n.Orientalizing.]
Defn: to render Oriental; to cause to conform to Oriental manners or conditions.
ORIENTATEO"ri*en*tate, v. t. [imp. & p. p. Orientated; p. pr. & vb. n.Orientating.] Etym: [From Orient.]
1. To place or turn toward the east; to cause to assume an easterly direction, or to veer eastward.
2. To arrange in order; to dispose or place (a body) so as to show its relation to other bodies, or the relation of its parts among themselves. A crystal is orientated when placed in its proper position so as to exhibit its symmetry. E. S. Dana.
ORIENTATEO"ri*en*tate, v. i.
Defn: To move or turn toward the east; to veer from the north or south toward the east.
ORIENTATIONO`ri*en*ta"tion, n. Etym: [Cf. F. orientation.]
1. The act or process of orientating; determination of the points of the compass, or the east point, in taking bearings.
2. The tendency of a revolving body, when suspended in a certain way, to bring the axis of rotation into parallelism with the earth's axis.
3. An aspect or fronting to the east; especially (Arch.), the placing of a church so that the chancel, containing the altar toward which the congregation fronts in worship, will be on the east end.
4. Fig.: A return to first principles; an orderly arrangement. The task of orientation undertaken in this chapter. L. F. Ward.
ORIENTNESSO"ri*ent*ness, n.
Defn: The quality or state of being orient or bright; splendor.[Obs.] Fuller.
ORIFICE Or"i*fice, n. Etym: [F., from L. orificium; os, oris, a mouth + facere to make. See Oral, and Fact.]
Defn: A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound. Shak. Etna was bored through the top with a monstrous orifice. Addison.
ORIFLAMB; ORIFLAMME Or"i*flamb, Or"i*flamme, n. Etym: [F. oriflamme, OF. oriflambe, LL. auriflamma; L. aurum gold + flamma flame; cf. L. flammula a little banner. So called because it was a flag of red silk, split into many points, and borne on a gilded lance.]
1. The ancient royal standard of France.
2. A standard or ensign, in battle. "A handkerchief like an oriflamb." Longfellow. And be your oriflamme to-day the helmet of Navarre. Macaulay.
ORIGAN; ORIGANUMOr"i*gan, O*rig"a*num, n. Etym: [L. origanum, Gr. Organy.] (Bot.)
Defn: A genus of aromatic labiate plants, including the sweet marjoram (O. Marjorana) and the wild marjoram (O. vulgare). Spenser.
ORIGENISMOr"i*gen*ism, n. (Eccl. Hist.)
Defn: The opinions of Origen of Alexandria, who lived in the 3d century, one of the most learned of the Greek Fathers. Prominent in his teaching was the doctrine that all created beings, including Satan, will ultimately be saved.
ORIGENISTOr"i*gen*ist, n.
Defn: A follower of Origen of Alexandria.
ORIGIN Or"i*gin, n. Etym: [F. origine, L. origo, -iginis, fr. oriri to rise, become visible; akin to Gr. r, and perh. to E. run.]
1. The first existence or beginning of anything; the birth. This mixed system of opinion and sentiment had its origin in the ancient chivalry. Burke.
2. That from which anything primarily proceeds; the fountain; the spring; the cause; the occasion.
3. (Anat.)
Defn: The point of attachment or end of a muscle which is fixed during contraction; — in contradistinction to insertion. Origin of coördinate axes (Math.), the point where the axes intersect. See Note under Ordinate.
Syn. — Commencement; rise; source; spring; fountain; derivation; cause; root; foundation. — Origin, Source. Origin denotes the rise or commencement of a thing; source presents itself under the image of a fountain flowing forth in a continuous stream of influences. The origin of moral evil has been much disputed, but no one can doubt that it is the source of most of the calamities of our race. I think he would have set out just as he did, with the origin of ideas — the proper starting point of a grammarian, who is to treat of their signs. Tooke. Famous Greece, That source of art and cultivated thought Which they to Rome, and Romans hither, brought. Waller.
ORIGINABLEO*rig"i*na*ble, a.
Defn: Capable of being originated.
ORIGINALO*rig"i*nal, a. Etym: [F. original, L. originalis.]
1. Pertaining to the origin or beginning; preceding all others; first in order; primitive; primary; pristine; as, the original state of man; the original laws of a country; the original inventor of a process. His form had yet not lost All her original brightness. Milton.
2. Not copied, imitated, or translated; new; fresh; genuine; as, an original thought; an original process; the original text of Scripture.
3. Having the power to suggest new thoughts or combinations of thought; inventive; as, an original genius.
4. Before unused or unknown; new; as, a book full of original matter. Original sin (Theol.), the first sin of Adam, as related to its consequences to his descendants of the human race; — called also total depravity. See Calvinism.
ORIGINALO*rig"i*nal, n. Etym: [Cf. F. original.]
1. Origin; commencement; source.It hath it original from much grief. Shak.And spangled heavens, a shining frame, Their great Original proclaim.Addison.
2. That which precedes all others of its class; archetype; first copy; hence, an original work of art, manuscript, text, and the like, as distinguished from a copy, translation, etc. The Scriptures may be now read in their own original. Milton.
3. An original thinker or writer; an originator. [R.] Men who are bad at copying, yet are good originals. C. G. Leland.
4. A person of marked eccentricity. [Colloq.]
5. (Zoöl. & Bot.)
Defn: The natural or wild species from which a domesticated or cultivated variety has been derived; as, the wolf is thought by some to be the original of the dog, the blackthorn the original of the plum.
ORIGINALISTO*rig"i*nal*ist, n.
Defn: One who is original. [R.]
ORIGINALITYO*rig`i*nal"i*ty, n. Etym: [Cf. F. originalité.]
Defn: The quality or state of being original. Macaulay.
ORIGINALLYO*rig"i*nal*ly, adv.
1. In the original time, or in an original manner; primarily; from the beginning or origin; not by derivation, or imitation. God is originally holy in himself. Bp. Pearson.
2. At first; at the origin; at the time of formation or costruction; as, a book originally written by another hand. "Originally a half length [portrait]." Walpole.
ORIGINALNESSO*rig"i*nal*ness, n.
Defn: The quality of being original; originality. [R.] Johnson.
ORIGINANTO*rig"i*nant, a.
Defn: Originating; original. [R.]An absolutely originant act of self will. Prof. Shedd.
ORIGINARYO*rig"i*na*ry, a. Etym: [L. originarius: cf. F. originaire.]
1. Causing existence; productive. [R.] The production of animals, in the originary way, requires a certain degree of warmth. Cheyne.
2. Primitive; primary; original. [R.] The grand originary right of all rights. Hickok.
ORIGINATEO*rig"i*nate, v. t. [imp. & p. p. Originated; p. pr. & vb. n.Originating.] Etym: [From Origin.]
Defn: To give an origin or beginning to; to cause to be; to bring into existence; to produce as new. A decomposition of the whole civill and political mass, for the purpose of originating a new civil order. Burke.
ORIGINATEO*rig"i*nate, v. i.
Defn: To take first existence; to have origin or beginning; to begin to exist or act; as, the scheme originated with the governor and council.
ORIGINATIONO*rig`i*na"tion, n. Etym: [L. originatio.]
1. The act or process of bringing or coming into existence; first production. "The origination of the universe." Keill. What comes from spirit is a spontaneous origination. Hickok.
2. Mode of production, or bringing into being. This eruca is propagated by animal parents, to wit, butterflies, after the common origination of all caterpillars. Ray.
ORIGINATIVEO*rig"i*na*tive, a.
Defn: Having power, or tending, to originate, or bring into existence; originating. H. Bushnell. — O*rig"i*na*tive*ly, adv.
ORIGINATORO*rig"i*na`tor, n.
Defn: One who originates.
ORILLONO*ril"lon, n. Etym: [F., lit., a little ear, from oreille an ear, fr.L. oricula, auricula, dim. of auris an ear. See Ear.] (Fort.)
Defn: A semicircular projection made at the shoulder of a bastion for the purpose of covering the retired flank, — found in old fortresses.
ORIOLO"ri*ol, n.
Defn: See Oriel.
ORIOLE O"ri*ole, n. Etym: [OF. oriol, oriouz, orieus, F. loriot (for l'oriol), fr. L. aureolus golden, dim. of aureus golden, fr. aurum gold. Cf. Aureole, Oriel, Loriot.] (Zoöl.) (a) Any one of various species of Old World singing birds of the family Oriolidæ. They are usually conspicuously colored with yellow and black. The European or golden oriole (Oriolus galbula, or O. oriolus) has a very musical flutelike note. (b) In America, any one of several species of the genus Icterus, belonging to the family Icteridæ. See Baltimore oriole, and Orchard oriole, under Orchard. Crested oriole. (Zoöl.) See Cassican.
ORIONO*ri"on, n. Etym: [L., fr. Gr. (Astron.)
Defn: A large and bright constellation on the equator, between thestars Aldebaran and Sirius. It contains a remarkable nebula visibleto the naked eye.The flaming glories of Orion's belt. E. Everett.
ORISKANYO*ris"ka*ny, a. Etym: [From Oriskany, in New York.] (Geol.)
Defn: Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age. Oriskany period, a subdivision of the American Paleozoic system intermediate or translational in character between the Silurian and Devonian ages. See Chart of Geology.
ORISMOLOGICALO*ris`mo*log"ic*al, a. (Nat. Hist.)
Defn: Of or pertaining to orismology.
ORISMOLOGYO`ris*mol"o*gy, n. Etym: [Gr. -logy. See Horizon.]
Defn: That departament of natural history which treats of technical terms.
ORISON Or"i*son, n. Etym: [OF. orison, oreson, oreison, F. oraison, fr. L. oratio speech, prayer. See Oration.]
Defn: A prayer; a supplication. [Poetic] Chaucer. Shak. Lowly they bowed, adoring, and began Their orisons, each morning duly paid. Milton.
ORISONTOr"i*sont, n.
Defn: Horizon. [Obs.] Chaucer.
ORKOrk, n. (Zoöl.)
Defn: See Orc.
ORKNEYANOrk"ney*an, a.
Defn: Of or pertaining to the Orkney islands. "Orkneyan skerries."Longfellow.
ORLE Orle, n. Etym: [F. orle an orle, a fillet, fr. LL. orla border, dim. of L. ora border, margin.]
1. (Her.)
Defn: A bearing, in the form of a fillet, round the shield, within, but at some distance from, the border.
2. (Her.)
Defn: The wreath, or chaplet, surmounting or encircling the helmet of a knight and bearing the crest. In orle, round the escutcheon, leaving the middle of the field vacant, or occupied by something else; — said of bearings arranged on the shield in the form of an orle.
ORLEANSOr"le*ans, n. Etym: [So called from the city of Orléans, in France.]
1. A cloth made of worsted and cotton, — used for wearing apparel.
2. A variety of the plum. See under Plum. [Eng.]
ORLOOr"lo, n. Etym: [Sp.] (Mus.)
Defn: A wind instrument of music in use among the Spaniards.
ORLOPOr"lop, n. Etym: [D. overloop the upper deck, lit., a running over oroverflowing, fr. overloopen to run over. See Over, and Leap, and cf.Overloop.] (Naut.)
Defn: The lowest deck of a vessel, esp. of a ship of war, consisting of a platform laid over the beams in the hold, on which the cables are coiled.
ORMAZD; AHURA-MAZDAOr"mazd or A`hu*ra-Maz"da, n. [Zend Ahuramazda.] (Zoroastrianism)
Defn: The supreme deity, the principle of good, creator of the world, and guardian of mankind. He is the opponent of Ahriman, the spirit of evil, both being sprung from Eternity, or, according to another version, Ahriman being the offspring of a moment of doubt on the part of Ormazd. Ormazd is attended by angels and archangels. He is represented as a bearded man inclosed in a winged circle, a conception probably derived from the Assyrian representations of Ashur.
ORMEROr"mer, n. (Zoöl.)
Defn: An abalone.
ORMOLU Or`mo*lu", n. Etym: [F. or moulu; or gold (L. aurum) + moulu, p. p. of moudre to grind, to mill, L. molere. See Aureate, and Mill.]
Defn: A variety of brass made to resemble gold by the use of less zinc and more copper in its composition than ordinary brass contains. Its golden color is often heightened by means of lacquer of some sort, or by use of acids. Called also mosaic gold. Ormolu varnish, a varnish applied to metals, as brass, to give the appearance of gold.
ORMUZDOr"muzd, n. Etym: [Zend Ahuramazda.]
Defn: The good principle, or being, of the ancient Persian religion.See Ahriman.
ORNOrn, v. t.
Defn: To ornament; to adorn. [Obs.] Joye.
ORNAMENT Or"na*ment, n. Etym: [OE. ornement, F. ornement, fr. L. ornamentum, fr. ornare to adorn.]
Defn: That which embellishes or adorns; that which adds grace or beauty; embellishment; decoration; adornment. The ornament of a meek and quiet spirit. 1 Pet. iii. 4. Like that long-buried body of the king Found lying with his urns and ornaments. Tennyson.
ORNAMENTOr"na*ment, v. t. [imp. & p. p. Ornamented; p. pr. & vb. n.Ornamenting.]
Defn: To adorn; to deck; to embellish; to beautify; as, to ornament a room, or a city.
Syn.— See Adorn.
ORNAMENTALOr`na*men"tal, a. Etym: [Cf. F. ornemental.]
Defn: Serving to ornament; characterized by ornament; beautifying;embellishing.Some think it most ornamental to wear their bracelets on theirwrists; others, about their ankles. Sir T. Browne.
ORNAMENTALLYOr`na*men"tal*ly, adv.
Defn: By way of ornament.
ORNAMENTATIONOr`na*men*ta"tion, n.
1. The act or art of ornamenting, or the state of being ornamented.
2. That which ornaments; ornament. C. Kingsley.
ORNAMENTEROr"na*ment*er, n.
Defn: One who ornaments; a decorator.
ORNATEOr*nate", a. Etym: [L. ornatus, p. p. of ornare to adorn.]
1. Adorned; decorated; beautiful. "So bedecked, ornate, and gay." Milton.
2. Finely finished, as a style of composition. A graceful and ornate rhetoric. Milton.
ORNATEOr*nate", v. t.
Defn: To adorn; to honor. [R.]They may ornate and sanctify the name of God. Latimer.
ORNATELYOr*nate"ly, adv.
Defn: In an ornate manner. Sir T. More.
ORNATENESSOr*nate"ness, n.
Defn: The quality of being ornate.
ORNATUREOr"na*ture, n. Etym: [L. ornatura.]
Defn: Decoration; ornamentation. [R.] Holinshed.
ORNITHICOr*nith"ic, a. Etym: [Gr.
Defn: Of or pertaining to birds; as, ornithic fossils. Owen.
ORNITHICHNITEOr`nith*ich"nite, n. Etym: [Ornitho- + Gr. (Paleon.)
Defn: The footmark of a bird occurring in strata of stone. Hitchcock.
ORNITHICHNOLOGYOr`nith*ich*nol"o*gy, n. Etym: [Ornitho- + ichnology.] (Paleon.)
Defn: The branch of science which treats of ornithichnites.Hitchcock.
ORNITHO-Ornitho-. Etym: [Cf. Ern.]
Defn: A combining form fr. Gr.
ORNITHODELPHIAOr*ni`tho*del"phi*a, n. pl. Etym: [NL., fr. Gr.
Defn: Same as Monotremata.— Or`ni*tho*del"phid, a.
ORNITHOIDICHNITEOr`ni*thoid*ich"nite, n. Etym: [Ornitho- + -oid + Gr. (Paleon.)
Defn: A fossil track resembling that of a bird. Hitchcock.
ORNITHOLITE Or*nith"o*lite, n. Etym: [Ornitho- + -lite.] (Paleon.) (a) The fossil remains of a bird. (b) A stone of various colors bearing the figures of birds.
ORNITHOLOGIC; ORNITHOLOGICAL Or`ni*tho*log"ic, Or`ni*tho*log"ic*al, a. Etym: [Cf. F. ornithologique.]
Defn: Of or pertaining to ornithology.
ORNITHOLOGISTOr`ni*thol"o*gist, n. Etym: [Cf. F. ornithologiste.]
Defn: One skilled in ornithology; a student of ornithology; one who describes birds.
ORNITHOLOGYOr`ni*thol"o*gy, n. Etym: [Ornitho- + -logy: cf. F. ornithologie.]
1. That branch of zoölogy which treats of the natural history of birds and their classification.
2. A treatise or book on this science.
ORNITHOMANCYOr*nith"o*man`cy, n. Etym: [Gr. ornithomancie.]
Defn: Divination by means of birds, their flight, etc.Ornithomancy grew into an elaborate science. De Quincey.
ORNITHONOr*ni"thon, n. Etym: [L., fr. Gr.
Defn: An aviary; a poultry house. Weale.
ORNITHOPAPPIOr*ni`tho*pap"pi, n. pl. Etym: [NL., from Gr. (Zoöl.)
Defn: An extinct order of birds. It includes only the Archæopteryx.
ORNITHOPODAOr`ni*thop"o*da, n. pl. Etym: [NL. See Ornitho-, and -poda.](Paleon.)
Defn: An order of herbivorous dinosaurs with birdlike characteristics in the skeleton, esp. in the pelvis and hind legs, which in some genera had only three functional toes, and supported the body in walking as in Iguanodon. See Illust. in Appendix.
ORNITHORHYNCHUSOr`ni*tho*rhyn"chus, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: See Duck mole, under Duck.
ORNITHOSAURIAOr*ni`tho*sau"ri*a, n. pl. Etym: [NL. See Ornitho-, and Sauria.](Paleon.)
Defn: An order of extinct flying reptiles; — called alsoPterosauria.
ORNITHOSCELIDAOr*ni`tho*scel"i*da, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: A group of extinct Reptilia, intermediate in structure (especially with regard to the pelvis) between reptiles and birds. — Or`ni*tho*scel"i*dan, a.
ORNITHOSCOPYOr`ni*thos"co*py, n. Etym: [Ornitho- + -scopy: cf. Gr.
Defn: Observation of birds and their habits. [R.] De Quincey.
ORNITHOTOMICALOr`ni*tho*tom"ic*al, a.
Defn: Of or pertaining to ornithotomy.
ORNITHOTOMISTOr`ni*thot"o*mist, n.
Defn: One who is skilled in ornithotomy.
ORNITHOTOMYOr`ni*thot"o*my, n. Etym: [Gr.
Defn: The anatomy or dissection of birds.
OROGRAPHOr"o*graph, n. [Gr. mountain + -graph.] (Surveying)
Defn: A machine for use in making topographical maps. It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations.
OROGRAPHIC; OROGRAPHICALOr`o*graph"ic, Or`o*graph"ic*al, a.
Defn: Of or pertaining to orography.
OROGRAPHYO*rog"ra*phy, n. Etym: [Gr. -graphy.]
Defn: That branch of science which treats of mountains and mountain systems; orology; as, the orography of Western Europe.
OROHELIOGRAPHOr`o*he"li*o*graph, n. [Gr. mountain + helio- + -graph.] (Photog.)
Defn: A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.
OROHIPPUSOr`o*hip"pus, n. Etym: [NL., fr. Gr. (Paleon.)
Defn: A genus of American Eocene mammals allied to the horse, but having four toes in front and three behind.
OROIDEO"roide, n. Etym: [F. or gold (L. aurum) + Gr.
Defn: An alloy, chiefly of copper and zinc or tin, resembling gold in color and brilliancy. [Written also oreide.]
OROLOGICALOr`o*log"ic*al, a. Etym: [Cf. F. orologique.]
Defn: Of or pertaining to orology.
OROLOGISTO*rol"o*gist, n.
Defn: One versed in orology.
OROLOGYO*rol"o*gy, n. Etym: [Gr. -logy: cf. F. orologie.]
Defn: The science or description of mountains.
OROMETERO*rom"e*ter, n. [Gr. mountain + -meter.] (Meteor.)
Defn: An aneroid barometer having a second scale that gives the approximate elevation above sea level of the place where the observation is made.
OROTUND O"ro*tund`, a. Etym: [L. os, oris, the mouth + rotundus round, smooth.]
Defn: Characterized by fullness, clearness, strength, and smoothness; ringing and musical; — said of the voice or manner of utterance. — n.
Defn: The orotund voice or utterance Rush.
OROTUNDITYO`ro*tun"di*ty, n.
Defn: The orotund mode of intonation.
ORPHALINEOr"pha*line, n.
Defn: See Orpheline. [Obs.]
ORPHANOr"phan, n. Etym: [L. orphanus, Gr. orbus. Cf. Orb a blank window.]
Defn: A child bereaved of both father and mother; sometimes, also, a child who has but one parent living. Orphans' court (Law), a court in some of the States of the Union, having jurisdiction over the estates and persons of orphans or other wards. Bouvier.
ORPHANOr"phan, a.
Defn: Bereaved of parents, or (sometimes) of one parent.
ORPHANOr"phan, v. t. [imp. & p. p. Orphaned; p. pr. & vb. n. Orphaning.]
Defn: To cause to become an orphan; to deprive of parents. Young.
ORPHANAGEOr"phan*age, n.
1. The state of being an orphan; orphanhood; orphans, collectively.
2. An institution or asylum for the care of orphans.
ORPHANCYOr"phan*cy, n.
Defn: Orphanhood. Sir P. Sidney.
ORPHANETOr"phan*et, n.
Defn: A little orphan. Drayton.
ORPHANHOODOr"phan*hood, n.
Defn: The state or condition of being an orphan; orphanage.
ORPHANISMOr"phan*ism, n.
Defn: Orphanhood. [R.]
ORPHANOTROPHISMOr`phan*ot"ro*phism, n.
Defn: The care and support of orphans. [R.] Cotton Mather (1711).
ORPHANOTROPHYOr`phan*ot"ro*phy, n. Etym: [L. orphanotrophium, Gr.
1. A hospital for orphans. [R.] A. Chalmers.
2. The act of supporting orphans. [R.]
ORPHARIONOr*pha"ri*on, n. (Mus.)
Defn: An old instrument of the lute or cittern kind. [Spelt also orpheoreon.]
ORPHEANOr*phe"an, a. Etym: [L. Orphus, Gr.
Defn: Of or pertaining to Orpheus, the mythic poet and musician; as,Orphean strains. Cowper.
ORPHELINEOr"phe*line, n. Etym: [F. orphelin. See Orphan.]
Defn: An orphan. [Obs.] Udcll.
ORPHEUSOr"phe*us, n. Etym: [L. Orpheus, Gr. (Gr. Myth.)
Defn: The famous mythic Thracian poet, son of the Muse Calliope, and husband of Eurydice. He is reputed to have had power to entrance beasts and inanimate objects by the music of his lyre.
ORPHICOr"phic, a. Etym: [L. Orphicus, Gr.
Defn: Pertaining to Orpheus; Orphean; as, Orphic hymns.
ORPHREYOr"phrey, n. Etym: [See Orfrays.]
Defn: A band of rich embroidery, wholly or in part of gold, affixed to vestments, especially those of ecclesiastics. Pugin.
ORPIMENT Or"pi*ment, n. Etym: [F., fr. L. auripigmentum; aurum gold + pigmentum pigment. Cf. Aureate, Pigment, Orpin, Orpine.] (Chem.)
Defn: Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; — formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. Our orpiment and sublimed mercurie. Chaucer. Red orpiment, realgar; the red sulphide of arsenic. — Yellow orpiment, king's yellow.
ORPINOr"pin, n. Etym: [F., orpiment, also, the plant orpine. SeeOrpiment.]
1. A yellow pigment of various degrees of intensity, approaching also to red.
2. (Bot.)
Defn: The orpine.
ORPINEOr"pine, n. Etym: [F. orpin the genus of plants which includesorpine; — so called from the yellow blossoms of a common species(Sedum acre). See Orpiment.] (Bot.)
Defn: A low plant with fleshy leaves (Sedum telephium), having clusters of purple flowers. It is found on dry, sandy places, and on old walls, in England, and has become naturalized in America. Called also stonecrop, and live-forever. [Written also orpin.]
ORRACHOr"rach, n.
Defn: See Orach.
ORRERYOr"re*ry, n.; pl. Orreries. Etym: [So named in honor of the Earl ofOrrery.]
Defn: An apparatus which illustrates, by the revolution of balls moved by wheelwork, the relative size, periodic motions, positions, orbits, etc., of bodies in the solar system.
ORRISOr"ris, n. Etym: [Prob. corrupted from It. ireos iris. See Iris.](Bot.)
Defn: A plant of the genus Iris (I. Florentina); a kind of flower-de-luce. Its rootstock has an odor resembling that of violets. Orris pea(Med.), an issue pea made from orris root.— Orris root, the fragrant rootstock of the orris.
ORRISOr"ris, n.
1. Etym: [Contr. from orfrays, or from arras.]
Defn: A sort of gold or silver lace. Johnson.
2. A peculiar pattern in which gold lace or silver lace is worked; especially, one in which the edges are ornamented with conical figures placed at equal distances, with spots between them.
ORSEDEW; ORSEDUEOrse"dew, Or"se*due, n.
Defn: Leaf metal of bronze; Dutch metal. See under Dutch.
ORSEILLEOr`seille", n. Etym: [F.]
Defn: See Archil.
ORSELLICOr*sel"lic, a. Etym: [From F. orseille archil. See Archil.] (Chem.)
Defn: Pertaining to, or designating, an acid found in certain lichens, and called also lecanoric acid. [Formerly written also orseillic.]
ORSELLINICOr`sel*lin"ic, a. (Chem.)
Defn: Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.
ORT Ort, n.; pl. Orts. Etym: [Akin to LG. ort, ortels, remnants of food, refuse, OFries. ort, OD. oorete, ooraete; prob. from the same prefix as in E. ordeal + a word akin to eat.]
Defn: A morsel left at a meal; a fragment; refuse; — commonly usedin the plural. Milton.Let him have time a beggar's orts to crave. Shak.
ORTALIDIANOr`ta*lid"i*an, n. (Zoöl.)
Defn: Any one of numerous small two-winged flies of the family Ortalidæ. The larvæ of many of these flies live in fruit; those of others produce galls on various plants.
ORTHIDOr"thid, n. (Zoöl.)
Defn: A brachiopod shell of the genus Orthis, and allied genera, of the family Orthidæ.
ORTHISOr"this, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: An extinct genus of Brachiopoda, abundant in the Paleozoic rocks.
ORTHITEOr"thite, n. Etym: [Gr. (Min.)
Defn: A variety of allanite occurring in slender prismatic crystals.
ORTHO-Or"tho-. Etym: [Gr. upright, vrdh to grow, to cause to grow.]
1. A combining form signifying straight, right, upright, correct, regular; as, orthodromy, orthodiagonal, orthodox, orthographic.
2. (Chem.)
Defn: A combining form (also used adjectively), designating: (a) (Inorganic Chem.) The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid. Cf. Normal. (b) (Organic Chem.)
Defn: Connection with, or affinity to, one variety of isomerism, characteristic of the benzene compounds; — contrasted with meta- or para-; as, the ortho position; hence, designating any substance showing such isomerism; as, an ortho compound.
Note: In the graphic representation of the benzene nucleus (see Benzene nucleus, under Benzene), provisionally adopted, any substance exhibiting double substitution in adjacent and contiguous carbon atoms, as 1 & 2, 3 & 4, 4 & 5, etc., is designated by ortho-; as, orthoxylene; any substance exhibiting substitution of two carbon atoms with one intervening, as 1 & 3, 2 & 4, 3 & 5, 4 & 6, etc., by meta-; as, resorcin or metaxylene; any substance exhibiting substitution in opposite parts, as 1 & 4, 2 & 5, 3 & 6, by para-; as, hydroquinone or paraxylene.
ORTHOCARBONICOr`tho*car*bon"ic, a. Etym: [Ortho- + carbonic.] (Chem.)
Defn: Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.
ORTHOCENTEROr`tho*cen"ter, n. Etym: [Ortho- + center.] (Geom.)
Defn: That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
ORTHOCERASOr*thoc"e*ras, n. Etym: [NL., fr. Gr. (Paleon.)
Defn: An extinct genus of Paleozoic Cephalopoda, having a long, straight, conical shell. The interior is divided into numerous chambers by transverse septa.
ORTHOCERATITEOr`tho*cer"a*tite, n. Etym: [Ortho- + Gr. (Zoöl.)
Defn: An orthoceras; also, any fossil shell allied to Orthoceras.
ORTHOCLASEOr"tho*clase, n. Etym: [Ortho- + Gr. (Min.)
Defn: Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.
ORTHOCLASTICOr`tho*clas"tic, a. (Crystallog.)
Defn: Breaking in directions at right angles to each other; — said of the monoclinic feldspars.
ORTHODIAGONALOr`tho*di*ag"o*nal, n. Etym: [Ortho- + diagonal.] (Crystallog.)
Defn: The diagonal or lateral axis in a monoclinic crystal which is at right angles with the vertical axis.
ORTHODOMEOr"tho*dome, n. Etym: [Ortho- + dome.] (Crystallog.)
Defn: See the Note under Dome, 4.
ORTHODOXOr"tho*dox, a. Etym: [L. orthodoxus, Gr. orthodoxe. See Ortho-,Dogma.]
1. Sound in opinion or doctrine, especially in religious doctrine; hence, holding the Christian faith; believing the doctrines taught in the Scriptures; — opposed to Ant: heretical and Ant: heterodox; as, an orthodox Christian.
2. According or congruous with the doctrines of Scripture, the creed of a church, the decree of a council, or the like; as, an orthodox opinion, book, etc.
3. Approved; conventional. He saluted me on both cheeks in the orthodox manner. H. R. Haweis.
Note: The term orthodox differs in its use among the various Christian communions. The Greek Church styles itself the "Holy Orthodox Apostolic Church," regarding all other bodies of Christians as more or less heterodox. The Roman Catholic Church regards the Protestant churches as heterodox in many points. In the United States the term orthodox is frequently used with reference to divergent views on the doctrine of the Trinity. Thus it has been common to speak of the Trinitarian Congregational churches in distinction from the Unitarian, as Orthodox. The name is also applied to the conservative, in distinction from the "liberal", or Hicksite, body in the Society of Friends. Schaff-Herzog Encyc.
ORTHODOXALOr"tho*dox`al, a.
Defn: Pertaining to, or evincing, orthodoxy; orthodox. [R.] Milton.
ORTHODOXALITYOr`tho*dox*al"i*ty, n.
Defn: Orthodoxness. [R.]
ORTHODOXALLYOr"tho*dox`al*ly, adv.
Defn: Orthodoxly. [R.] Milton
ORTHODOXASTICALOr`tho*dox*as"tic*al, a.
Defn: Orthodox. [Obs.]
ORTHODOXICALOr`tho*dox"ic*al, a.
Defn: Pertaining to, or evincing, orthodoxy; orthodox.
ORTHODOXLYOr"tho*dox`ly, adv.
Defn: In an orthodox manner; with soundness of faith. Sir W.Hamilton.
ORTHODOXNESSOr"tho*dox`ness, n.
Defn: The quality or state of being orthodox; orthodoxy. Waterland.
ORTHODOXYOr"tho*dox`y, n. Etym: [Gr. orthodoxie. See Orthodox.]
1. Soundness of faith; a belief in the doctrines taught in theScriptures, or in some established standard of faith; — opposed toheterodoxy or to heresy.Basil himself bears full and clear testimony to Gregory's orthodoxy.Waterland.
2. Consonance to genuine Scriptural doctrines; — said of moral doctrines and beliefs; as, the orthodoxy of a creed.
3. By extension, said of any correct doctrine or belief.
ORTHODROMICOr`tho*drom"ic, a. Etym: [Ortho- + Gr.
Defn: Of or pertaining to orthodromy.
ORTHODROMICSOr`tho*drom"ics, n.
Defn: The art of sailing in a direct course, or on the arc of a great circle, which is the shortest distance between any two points on the surface of the globe; great-circle sailing; orthodromy.
ORTHODROMYOr"tho*drom`y, n. Etym: [Cf. F. orthodromie.]
Defn: The act or art of sailing on a great circle.
ORTHOEPIC; ORTHOEPICALOr`tho*ëp"ic, Or`tho*ëp"ic*al, a.
Defn: Of or pertaining to orthoëpy, or correct pronunciation.— Or`tho*ëp"ic*al*ly, adv.
ORTHOEPISTOr"tho*ë*pist, n.
Defn: One who is skilled in orthoëpy.
ORTHOEPYOr"tho*ë*py, n. Etym: [Gr. orthoépie. See Ortho-, and Epic.]
Defn: The art of uttering words corectly; a correct pronunciation of words; also, mode of pronunciation.
ORTHOGAMYOr*thog"a*my, n. Etym: [Ortho- + Gr. (Bot.)
Defn: Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; — opposed to heterogamy.
ORTHOGNATHICOr`thog*nath"ic, a.
Defn: Orthognathous.
ORTHOGNATHISMOr*thog"na*thism, n. (Anat.)
Defn: The quality or state of being orthognathous. Huxley.
ORTHOGNATHOUSOr*thog"na*thous, a. Etym: [Ortho- + Gr. (Anat.)
Defn: Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; — opposed to Ant: prognathous. See Gnathic index, under Gnathic.
ORTHOGONOr"tho*gon, n. Etym: [Ortho- + Gr. orthogone, a.] (Geom.)
Defn: A rectangular figure.
ORTHOGONALOr*thog"o*nal, a. Etym: [Cf. F. orthogonal.]
Defn: Right-angled; rectangular; as, an orthogonal intersection of one curve with another. Orthogonal projection. See under Orthographic.
ORTHOGONALLYOr*thog"o*nal*ly, adv.
Defn: Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.
ORTHOGRAPHOr"tho*graph, n. [Ortho- + -graph.] (Arch.)
Defn: An orthographic projection, sometimes partly in section, esp. of a building.
ORTHOGRAPHEROr*thog"ra*pher, n.
Defn: One versed in orthography; one who spells words correctly.
ORTHOGRAPHIC; ORTHOGRAPHICALOr`tho*graph"ic, Or`tho*graph"ic*al, a. Etym: [Cf. F. orthographique,L. orthographus, Gr.
1. Of or pertaining to orthography, or right spelling; also, correct in spelling; as, orthographical rules; the letter was orthographic.
2. (Geom.)
Defn: Of or pertaining to right lines or angles. Orthographic or Orthogonal, projection, that projection which is made by drawing lines, from every point to be projected, perpendicular to the plane of projection. Such a projection of the sphere represents its circles as seen in perspective by an eye supposed to be placed at an infinite distance, the plane of projection passing through the center of the sphere perpendicularly to the line of sight.
ORTHOGRAPHICALLYOr`tho*graph"ic*al*ly, adv.
Defn: In an orthographical manner: (a) according to the rules of proper spelling; (b) according to orthographic projection.
ORTHOGRAPHISTOr*thog"ra*phist, n.
Defn: One who spells words correctly; an orthographer.
ORTHOGRAPHIZEOr*thog"ra*phize, v. t.
Defn: To spell correctly or according to usage; to correct in regardto spelling.In the coalesced into ith, which modern reaction has orthographizedto i' th'. Earle.
ORTHOGRAPHY Or*thog"ra*phy, n. Etym: [OE. ortographie, OF. orthographie, L. orthographia, Gr. Ortho-, and Graphic.]
1. The art or practice of writing words with the proper letters, according to standard usage; conventionally correct spelling; also, mode of spelling; as, his orthography is vicious. When spelling no longer follows the pronunciation, but is hardened into orthography. Earle.
2. The part of grammar which treats of the letters, and of the art of spelling words correctly.
3. A drawing in correct projection, especially an elevation or a vertical section.
ORTHOLOGYOr*thol"o*gy, n. Etym: [Gr. orthologie.]
Defn: The right description of things. [R.] Fotherby.
ORTHOMETRICOr`tho*met"ric, a. Etym: [See Orthometry.] (Crystallog.)
Defn: Having the axes at right angles to one another; — said of crystals or crystalline forms.
ORTHOMETRYOr*thom"e*try, n. Etym: [Ortho- + -metry.]
Defn: The art or practice of constructing verses correctly; the laws of correct versification.
ORTHOMORPHICOr`tho*mor"phic, a. Etym: [Ortho- + morphic.] (Geom.)
Defn: Having the right form. Orthomorphic projection, a projection in which the angles in the figure to be projected are equal to the corresponding angles in the projected figure.
ORTHOPEDIC; ORTHOPEDICALOr`tho*ped"ic, Or`tho*ped"ic*al, a. (Med.)
Defn: Pertaining to, or employed in, orthopedy; relating to the prevention or cure of deformities of children, or, in general, of the human body at any age; as, orthopedic surgery; an orthopedic hospital.
ORTHOPEDISTOr*thop"e*dist, n. (Med.)
Defn: One who prevents, cures, or remedies deformities, esp. in children.
ORTHOPEDYOr*thop"e*dy, n. Etym: [Ortho- + Gr. (Med.)
Defn: The art or practice of curing the deformities of children, or, by extension, any deformities of the human body.
ORTHOPHONYOr*thoph"o*ny, n. Etym: [Ortho- + Gr.
Defn: The art of correct articulation; voice training.
ORTHOPINACOIDOr`tho*pin"a*coid, n. Etym: [Ortho- + pinacoid.] (Crystallog.)
Defn: A name given to the two planes in the monoclinic system which are parallel to the vertical and orthodiagonal axes.
ORTHOPNOEA; ORTHOPNYOr`thop*noe"a, Or*thop"ny, n. Etym: [L. orthopnoea, Gr. orthopnée.](Med.)
Defn: Specifically, a morbid condition in which respiration can be performed only in an erect posture; by extension, any difficulty of breathing.
ORTHOPODAOr*thop"o*da, n. pl. Etym: [NL. See Ortho-, and -poda.] (Zoöl.)
Defn: An extinct order of reptiles which stood erect on the hind legs, and resembled birds in the structure of the feet, pelvis, and other parts.
ORTHOPRAXYOr"tho*prax`y, n. Etym: [Gr. (Med.)
Defn: The treatment of deformities in the human body by mechanical appliances.
ORTHOPTERAOr*thop"te*ra, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: An order of mandibulate insects including grasshoppers, locusts, cockroaches, etc. See Illust. under Insect.
Note: The anterior wings are usually thickened and protect the posterior wings, which are larger and fold longitudinally like a fan. The Orthoptera undergo no metamorphosis.
ORTHOPTERANOr*thop"ter*an, n. (Zoöl.)
Defn: One of the Orthoptera.
ORTHOPTEROUSOr*thop"ter*ous, a. (Zoöl.)
Defn: Of or pertaining to the Orthoptera.
ORTHORHOMBICOr`tho*rhom"bic, a. Etym: [Ortho- + rhombic.] (Crystallog.)
Defn: Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
ORTHOSCOPEOr"tho*scope, n. Etym: [Ortho- + -scope.] (Physyol.)
Defn: An instrument designed to show the condition of the superficial portions of the eye.
ORTHOSCOPICOr`tho*scop"ic, a. (Opt.)
Defn: Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.
ORTHOSILICICOr`tho*si*lic"ic, a. Etym: [Ortho- + silicic.] (Chem.)
Defn: Designating the form of silicic acid having the normal or highest number of hydroxyl groups.
ORTHOSPERMOUSOr`tho*sper"mous, a. Etym: [Ortho- + Gr. (Bot.)
Defn: Having the seeds straight, as in the fruits of some umbelliferous plants; — opposed to coelospermous. Darwin.
ORTHOSTADEOr"tho*stade, n. Etym: [Gr. (Anc. Costume)
Defn: A chiton, or loose, ungirded tunic, falling in straight folds.
ORTHOSTICHYOr*thos"ti*chy, n.; pl. Orthostichies. Etym: [Ortho- + Gr. (Bot.)
Defn: A longitudinal rank, or row, of leaves along a stem.
ORTHOTOMICOr`tho*tom"ic, a. Etym: [Ortho- + Gr. (Geom.)
Defn: Cutting at right angles. Orthotomic circle (Geom.), that circle which cuts three given circles at right angles.
ORTHOTOMOUSOr*thot"o*mous, a. (Crystallog.)
Defn: Having two cleavages at right angles with one another.
ORTHOTOMYOr*thot"o*my, n. (Geom.)
Defn: The property of cutting at right angles.
ORTHOTONEOr"tho*tone, a. Etym: [Ortho- + Gr. (Gr. Gram.)
Defn: Retaining the accent; not enclitic; — said of certain indefinite pronouns and adverbs when used interrogatively, which, when not so used, are ordinarilly enclitic.
ORTHOTROPAL; ORTHOTROPOUSOr*thot"ro*pal, Or*thot"ro*pous, a. Etym: [Ortho- + Gr. orthotrope.](Bot.)
Defn: Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.
Note: This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum.
ORTHOTROPICOr`tho*trop"ic, a. Etym: [See Orthotropal.] (Bot.)
Defn: Having the longer axis vertical; — said of erect stems. Encyc.Brit.
ORTHOXYLENEOr`tho*xy"lene, n. Etym: [Ortho- + xylene.] (Chem.)
Defn: That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.
ORTIVE Or"tive, a. Etym: [L. ortivus, fr. oriri, ortus, to rise: cf. F. ortive.]
Defn: Of or relating to the time or act of rising; eastern; as, the ortive amplitude of a planet.
ORTOLAN Or"to*lan, n. Etym: [F., fr. It. ortolano ortolan, gardener, fr. L. hortulanus gardener, fr. hortulus, dim. of hortus garden. So called because it frequents the hedges of gardens. See Yard an inclosure, and cf. Hortulan.] (Zoöl.) (a) A European singing bird (Emberiza hortulana), about the size of the lark, with black wings. It is esteemed delicious food when fattened. Called also bunting. (b) In England, the wheatear (Saxicola oenanthe). (c) In America, the sora, or Carolina rail (Porzana Carolina). See Sora.
ORTYGANOr"ty*gan, n. Etym: [Gr. (Zoöl.)
Defn: One of several species of East Indian birds of the generaOrtygis and Hemipodius. They resemble quails, but lack the hind toe.See Turnix.
ORVALOr"val, n. Etym: [F. orvale.] (Bot.)
Defn: A kind of sage (Salvia Horminum).
ORVETOr`vet", n. Etym: [F.] (Zoöl.)
Defn: The blindworm.
ORVIETAN Or`vi*e"tan, n. Etym: [F. orviétan: cf. It. orvietano. So called because invented at Orvieto, in Italy.]
Defn: A kind of antidote for poisons; a counter poison formerly in vogue. [Obs.]