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Webster's Revised Unabridged Dictionary (1913, 100,000 entries)

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Webster > Letter O > Page 37 of 63.
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Osmose Os"mose noun [ Greek ..., equiv. to ... impulse, from ... to push.] (Chemical Physics) (a) The tendency in fluids to mix, or become equably diffused, when in contact. It was first observed between fluids of differing densities, and as taking place through a membrane or an intervening porous structure. The more rapid flow from the thinner to the thicker fluid was then called endosmose , and the opposite, slower current, exosmose . Both are, however, results of the same force. Osmose may be regarded as a form of molecular attraction, allied to that of adhesion. (b) The action produced by this tendency. Electric osmose , or Electric endosmose (Electricity) , the transportation of a liquid through a porous septum by the action of an electric current.

Osmosis Os·mo"sis noun [ New Latin ] Osmose.

Osmotic Os·mot"ic adjective Pertaining to, or having the property of, osmose; as, osmotic force.

Osmund Os"mund noun (Botany) A fern of the genus Osmunda , or flowering fern. The most remarkable species is the osmund royal , or royal fern ( Osmunda regalis ), which grows in wet or boggy places, and has large bipinnate fronds, often with a panicle of capsules at the top. The rootstock contains much starch, and has been used in stiffening linen.

Osnaburg Os"na·burg noun A species of coarse linen, originally made in Osnaburg , Germany.

Oso-berry O"so-ber`ry noun (Botany) The small, blueblack, drupelike fruit of the Nuttallia cerasiformis , a shrub of Oregon and California, belonging to the Cherry tribe of Rosaceæ .

Osphradium Os·phra"di·um noun ; plural Osphradia . [ New Latin , from Greek ... strong scent, from ... to smell.] (Zoology) The olfactory organ of some Mollusca. It is connected with the organ of respiration.

Osprey, Ospray Os"prey, Os"pray noun [ Through Old French from Latin ossifraga (orig., the bone breaker); probably influenced by oripelargus (mountain stork, a kind of eagle, Greek ...); confer Old French orpres , and French orfraie . See Ossifrage .] (Zoology) The fishhawk.

Oss Oss intransitive verb [ See Osse , noun ] To prophesy; to presage. [ R. & Obsolete] R. Edgeworth.

Osse Osse noun [ Greek ....] A prophetic or ominous utterance. [ R. & Obsolete] Holland.

Ossean Os"se·an noun (Zoology) A fish having a bony skeleton; a teleost.

Ossein Os"se·in noun [ Latin os bone.] (Physiol. Chem.) The organic basis of bone tissue; the residue after removal of the mineral matters from bone by dilute acid; in embryonic tissue, the substance in which the mineral salts are deposited to form bone; -- called also ostein . Chemically it is the same as collagen .

Osselet Os"se·let noun [ French] 1. A little bone. 2. (Zoology) The internal bone, or shell, of a cuttlefish.

Osseous Os"se·ous adjective [ Latin osseus , from os , ossis bone; akin to Greek ..., Sanskrit asthi . Confer Oyster .] Composed of bone; resembling bone; capable of forming bone; bony; ossific.

Osseter Os"se·ter noun [ Russ, osetr' sturgeon.] (Zoology) A species of sturgeon.

Ossianic Os`si·an"ic adjective Of or pertaining to, or characteristic of, Ossian , a legendary Erse or Celtic bard.

The compositions might be fairly classed as Ossianic .

G. Eliot.

Ossicle Os"si·cle noun [ Latin ossiculum , dim. of os , ossis , a bone.] 1. A little bone; as, the auditory ossicles in the tympanum of the ear. 2. (Zoology) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.

Ossiculated Os·sic"u·la`ted adjective Having small bones.

Ossiculum Os·sic"u·lum noun ; plural Ossicula . [ Latin , a little bone.] (Zoology) Same as Ossicle .

Ossiferous Os·sif"er·ous adjective [ Latin os , ossis , a bone + -ferous : confer French ossifère .] Containing or yielding bone.

Ossific Os·sif"ic adjective [ Latin os , ossis , bone + facere to make: confer French ossifique . See Fact .] Capable of producing bone; having the power to change cartilage or other tissue into bone.

Ossification Os`si·fi·ca"tion noun [ Confer French ossification . See Ossify .] 1. (Physiol.) The formation of bone; the process, in the growth of an animal, by which inorganic material (mainly lime salts) is deposited in cartilage or membrane, forming bony tissue; ostosis. » Besides the natural ossification of growing tissue, there is the so-called accidental ossification which sometimes follows certain abnormal conditions, as in the ossification of an artery. 2. The state of being changed into a bony substance; also, a mass or point of ossified tissue.

Ossified Os"si·fied adjective Changed to bone or something resembling bone; hardened by deposits of mineral matter of any kind; -- said of tissues.

Ossifrage Os"si·frage noun [ Latin ossifraga , ossifragus , osprey, from ossifragus bone breaking; os , ossis , a bone + frangere , fractum , to break. See Osseous , Break , and confer Osprey , Ossifragous .] (Zoology) (a) The lammergeir. (b) The young of the sea eagle or bald eagle. [ Obsolete]

Ossifragous Os·sif"ra·gous adjective [ Latin ossifragus . See Ossifrage .] Serving to break bones; bone-breaking.

Ossify Os"si·fy transitive verb [ imperfect & past participle Ossified ; present participle & verbal noun Ossifying .] [ Latin os , ossis , bone + - fy : confer French ossifier . See Osseous .] 1. (Physiol.) To form into bone; to change from a soft animal substance into bone, as by the deposition of lime salts. 2. Fig.: To harden; as, to ossify the heart. Ruskin.

Ossify Os"si·fy intransitive verb (Physiol.) To become bone; to change from a soft tissue to a hard bony tissue.

Ossifying Os"si·fy`ing adjective (Physiol.) Changing into bone; becoming bone; as, the ossifying process.

Ossivorous Os·siv"o·rous adjective [ Latin os , ossis , bone + vorare to devour: confer French ossivore .] Feeding on bones; eating bones; as, ossivorous quadrupeds. Derham.

Osspringer Os"spring·er noun The osprey. [ R.]

Ossuarium Os`su·a"ri·um noun [ Latin ] A charnel house; an ossuary. Walpole.

Ossuary Os"su·a·ry noun ; plural -ries . [ Latin ossuarium , from ossuarius of or bones, from os , ossis , bone: confer French ossuaire .] A place where the bones of the dead are deposited; a charnel house. [ Obsolete] Sir T. Browne.

Ost Ost noun See Oast .

Osteal Os"te·al adjective [ Greek ... a bone.] Osseous.

Ostein Os"te·in noun [ Greek ... bone.] Ossein.

Osteitis Os`te·i"tis noun [ New Latin See Osteo- , and -itis .] (Medicine) Inflammation of bone.

Osteler Os"tel·er noun Same as Hosteler . Wyclif.

Ostend Os·tend" transitive verb [ Latin ostendere to show.] To exhibit; to manifest. [ Obsolete]

Mercy to mean offenders we'll ostend .

J. Webster.

Ostensibility Os·ten`si·bil"i·ty noun The quality or state of being ostensible.

Ostensible Os·ten"si·ble adjective [ From Latin ostensus , past participle of ostendere to show, prop., to stretch out before; from prefix obs- (old form of ob- ) + tendere to stretch. See Tend .] 1. Capable of being shown; proper or intended to be shown. [ R.] Walpole. 2. Shown; exhibited; declared; avowed; professed; apparent; -- often used as opposed to real or actual ; as, an ostensible reason, motive, or aim. D. Ramsay.

Ostensibly Os·ten"si·bly adverb In an ostensible manner; avowedly; professedly; apparently. Walsh.

Ostensibly , we were intended to prevent filibustering into Texas, but really as a menace to Mexico.

U. S. Grant.

Ostension Os·ten"sion noun [ Latin ostensio a showing: confer French ostension . See Ostend .] (Eccl.) The showing of the sacrament on the altar in order that it may receive the adoration of the communicants.

Ostensive Os·ten"sive adjective Showing; exhibiting. Ostensive demonstration (Math.) , a direct or positive demonstration, as opposed to the apagogical or indirect method.

Ostensively Os·ten"sive·ly adverb In an ostensive manner.

Ostensorium, Ostensory Os`ten·so"ri·um, Os·ten"so·ry noun ; plural Latin -soria , English -sories . [ New Latin ostensorium : confer French ostensoir . See Ostensible .] (R. C. Ch.) Same as Monstrance .

Ostent Os"tent noun [ Latin ostentus , ostentum , from ostendere (past participle ostensus and ostentus ) to show. See Ostensible .] 1. Appearance; air; mien. Shak. 2. Manifestation; token; portent. Dryden.

We asked of God that some ostent might clear
Our cloudy business, who gave us sign.

Chapman.

Ostentate Os"ten·tate transitive verb [ Latin ostentatus , past participle of ostentare , v. intens. from ostendere . See Ostent .] To make an ambitious display of; to show or exhibit boastingly. [ R.] Jer. Taylor.

Ostentation Os`ten·ta"tion noun [ Latin ostentatio : confer French ostentation .] 1. The act of ostentating or of making an ambitious display; unnecessary show; pretentious parade; -- usually in a detractive sense. "Much ostentation vain of fleshly arm." Milton.

He knew that good and bountiful minds were sometimes inclined to ostentation .

Atterbury. 2. A show or spectacle. [ Obsolete] Shak. Syn. -- Parade; pageantry; show; pomp; pompousness; vaunting; boasting. See Parade .

Ostentatious Os`ten·ta"tious adjective Fond of, or evincing, ostentation; unduly conspicuous; pretentious; boastful.

Far from being ostentatious of the good you do.

Dryden.

The ostentatious professions of many years.

Macaulay. -- Os`ten*ta"tious*ly , adverb -- Os`ten*ta"tious*ness , noun

Ostentator Os"ten·ta`tor noun [ Latin ] One fond of display; a boaster. Sherwood.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Webster > Letter O > Page 37 of 63.
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