Webster's Dictionary, 1913

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

Ossifrage 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 adjective [ Latin ossifragus . See Ossifrage .] Serving to break bones; bone-breaking.

Ossify 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 intransitive verb (Physiol.) To become bone; to change from a soft tissue to a hard bony tissue.

Ossifying adjective (Physiol.) Changing into bone; becoming bone; as, the ossifying process.

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

Osspringer noun The osprey. [ R.]

Ossuarium noun [ Latin ] A charnel house; an ossuary. Walpole.

Ossuary 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 noun See Oast .

Osteal adjective [ Greek ... a bone.] Osseous.

Ostein noun [ Greek ... bone.] Ossein.

Osteitis noun [ New Latin See Osteo- , and -itis .] (Medicine) Inflammation of bone.

Osteler noun Same as Hosteler . Wyclif.

Ostend transitive verb [ Latin ostendere to show.] To exhibit; to manifest. [ Obsolete]

Mercy to mean offenders we'll ostend .
J. Webster.

Ostensibility noun The quality or state of being ostensible.

Ostensible 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 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 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 adjective Showing; exhibiting.

Ostensive demonstration (Math.) , a direct or positive demonstration, as opposed to the apagogical or indirect method.

Ostensively adverb In an ostensive manner.

Ostensorium, Ostensory noun ; plural Latin -soria , English -sories . [ New Latin ostensorium : confer French ostensoir . See Ostensible .] (R. C. Ch.) Same as Monstrance .

Ostent 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.

Ostentate 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 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 .

2. A show or spectacle. [ Obsolete] Shak.

Syn. -- Parade; pageantry; show; pomp; pompousness; vaunting; boasting. See Parade .

Ostentatious adjective Fond of, or evincing, ostentation; unduly conspicuous; pretentious; boastful.

Far from being ostentatious of the good you do.

The ostentatious professions of many years.

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

Ostentator noun [ Latin ] One fond of display; a boaster. Sherwood.

Ostentive adjective Ostentatious. [ Obsolete]

Ostentous adjective Ostentatious. [ Obsolete] Feltham.

Osteo- A combining form of Greek ... a bone .

Osteoblast noun [ Osteo- + -blast .] (Anat.) One of the protoplasmic cells which occur in the osteogenetic layer of the periosteum, and from or around which the matrix of the bone is developed; an osteoplast.

Osteoclasis noun [ New Latin See Osteoclast .] (Surg.) The operation of breaking a bone in order to correct deformity.

Osteoclast noun [ Osteo- + Greek ... to break.]

1. (Physiol.) A myeloplax.

» The osteoclasts occur usually in pits or cavities which they appear to have excavated, and are supposed to be concerned in the absorption of the bone matrix.

2. An instrument for performing osteoclasis.

Osteocolla noun [ Osteo- + Greek ... glue.]

1. A kind of glue obtained from bones. Ure.

2. A cellular calc tufa, which in some places forms incrustations on the stems of plants, -- formerly supposed to have the quality of uniting fractured bones.

Osteocomma noun ; plural Latin Osteocommata , English Osteocommas . [ New Latin See Osteo- , and Comma .] (Anat.) A metamere of the vertebrate skeleton; an osteomere; a vertebra. Owen.

Osteocope noun [ Greek ...; ... a bone + ... a striking, pain: confer French ostéocope .] (Medicine) Pain in the bones; a violent fixed pain in any part of a bone. -- Os`te*o*cop"ic adjective

Osteocranium noun [ Osteo- + cranium .] (Anat.) The bony cranium, as distinguished from the cartilaginous cranium.

Osteodentine noun [ Osteo- + denite .] (Anat.) A hard substance, somewhat like bone, which is sometimes deposited within the pulp cavity of teeth.

Osteogen noun [ Osteo- + -gen .] (Physiol.) The soft tissue, or substance, which, in developing bone, ultimately undergoes ossification.

Osteogenesis, Osteogeny noun [ Osteo- + genesis , or the root of Greek ... to be born: confer French ostéogénie .] (Physiol.) The formation or growth of bone.

Osteogenetic adjective (Physiol.) Connected with osteogenesis, or the formation of bone; producing bone; as, osteogenetic tissue; the osteogenetic layer of the periosteum.

Osteogenic adjective (Physiol.) Osteogenetic.

Osteographer noun An osteologist.

Osteography noun [ Osteo- + -graphy .] The description of bones; osteology.

Osteoid adjective [ Osteo- + - oid : confer Greek ....] (Anat.) Resembling bone; bonelike.

Osteolite noun [ Osteo- + -lite .] (Min.) A massive impure apatite, or calcium phosphate.

Osteologer noun One versed in osteology; an osteologist.

Osteologic, Osteological adjective [ Confer French ostéologique .] Of or pertaining to osteology. -- Os`te*o*log"ic*al*ly , adverb

Osteologist noun One who is skilled in osteology; an osteologer.