Webster's Dictionary, 1913

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Osculate transitive verb [ imperfect & past participle Osculated ; present participle & verbal noun Osculating .] [ Latin osculatus , past participle of osculari to kiss, from osculum a little mouth, a kiss, dim. of os mouth. See Oral , and confer Oscillate .]


1. To kiss.

2. (Geom.) To touch closely, so as to have a common curvature at the point of contact. See Osculation , 2.

Osculate intransitive verb
1. To kiss one another; to kiss.

2. (Geom.) To touch closely. See Osculation , 2.

3. (Biol.) To have characters in common with two genera or families, so as to form a connecting link between them; to interosculate. See Osculant .

Osculation noun [ Latin osculatio a kissing: confer French osculation .]
1. The act of kissing; a kiss.

2. (Geom.) The contact of one curve with another, when the number of consecutive points of the latter through which the former passes suffices for the complete determination of the former curve. Brande & C.

Osculatory adjective
1. Of or pertaining to kissing; kissing. "The osculatory ceremony." Thackeray.

2. (Geom.) Pertaining to, or having the properties of, an osculatrix; capable of osculation; as, a circle may be osculatory with a curve, at a given point.

Osculatory circle . (Geom.) See Osculating circle of a curve , under Circle . -- Osculatory plane (to a curve of double curvature), a plane which passes through three successive points of the curve. -- Osculatory sphere (to a line of double curvature), a sphere passing through four consecutive points of the curve.

Osculatory noun [ Late Latin osculatorium . See Osculate .] (R. C. Ch.) Same as Pax , 2.

Osculatrix noun ; plural Osculatrixes . [ New Latin ] (Geom.) A curve whose contact with a given curve, at a given point, is of a higher order (or involves the equality of a greater number of successive differential coefficients of the ordinates of the curves taken at that point) than that of any other curve of the same kind.

Oscule noun [ Confer French oscule . See Osculum .] (Zoology) One of the excurrent apertures of sponges.

Osculum noun ; plural Oscula . [ Latin , a little mouth.] (Zoology) Same as Oscule .

Osier noun [ French osier : confer Prov . French oisis , Armor. ozil , aozil , Greek ..., ..., ..., Latin vitex , and English withy .] (Botany) (a) A kind of willow ( Salix viminalis ) growing in wet places in Europe and Asia, and introduced into North America. It is considered the best of the willows for basket work. The name is sometimes given to any kind of willow. (b) One of the long, pliable twigs of this plant, or of other similar plants.

The rank of osiers by the murmuring stream.
Shak.

Osier bed , or Osier holt , a place where willows are grown for basket making. [ Eng.] -- Red osier . (a) A kind of willow with reddish twigs ( Salix rubra ). (b) An American shrub ( Cornus stolonifera ) which has slender red branches; -- also called osier cornel .

Osier adjective Made of osiers; composed of, or containing, osiers. "This osier cage of ours." Shak.

Osiered adjective Covered or adorned with osiers; as, osiered banks. [ Poetic] Collins.

Osiery noun An osier bed.

Osiris noun [ Latin , from Greek ...; of Egyptian origin.] (Myth.) One of the principal divinities of Egypt, the brother and husband of Isis. He was figured as a mummy wearing the royal cap of Upper Egypt, and was symbolized by the sacred bull, called Apis . Confer Serapis . -- O*sir"i*an adjective

Osmanli noun ; plural Osmanlis . [ So called from Osman . See Ottoman .] A Turkish official; one of the dominant tribe of Turks; loosely, any Turk.

Osmate noun (Chemistry) A salt of osmic acid. [ Formerly written also osmiate .]

Osmaterium noun ; plural Osmateria . [ New Latin , from Greek ... smell.] (Zoology) One of a pair of scent organs which the larvæ of certain butterflies emit from the first body segment, either above or below.

Osmazome noun [ Greek ... smell, odor + ... broth: confer French osmazôme .] (Old Chem.) A substance formerly supposed to give to soup and broth their characteristic odor, and probably consisting of one or several of the class of nitrogenous substances which are called extractives .

Osmiamate noun (Chemistry) A salt of osmiamic acid.

Osmiamic adjective [ Osmi um + am ido.] (Chemistry) Of, pertaining to, or designating, a nitrogenous acid of osmium, H 2 N 2 Os 2 O 5 , forming a well-known series of yellow salts.

Osmic adjective (Chemistry) Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide.

Osmic acid . (Chemistry) (a) Osmic tetroxide . [ Obsolete] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites . -- Osmic tetroxide (Chemistry) , a white volatile crystalline substance, OsO 4 , the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odor. Formerly improperly called osmic acid .

Osmidrosis noun [ New Latin , from Greek ... smell + ... to sweat.] (Medicine) The secretion of fetid sweat.

Osmious adjective (Chemistry) Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride. [ Written also osmous .]

Osmious acid (Chemistry) , an acid derived from osmium, analogous to sulphurous acid, and forming unstable salts. It is a brown amorphous substance.

Osmite noun (Chemistry) A salt of osmious acid.

Osmium noun [ Greek ... a smell, odor, akin to ... to smell. So named in allusion to the strong chlorinelike odor of osmic tetroxide. See Odor .] (Chemistry) A rare metallic element of the platinum group, found native as an alloy in platinum ore, and in iridosmine. It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known. Its tetroxide is used in histological experiments to stain tissues. Symbol Os . Atomic weight 191.1. Specific gravity 22.477.

Osmogene noun [ Osmo se + root of Greek ... race.] An apparatus, consisting of a number of cells whose sides are of parchment paper, for conducting the process of osmosis. It is used esp. in sugar refining to remove potassium salts from the molasses.

Osmograph noun [ Osmo se + -graph .] (Physics) An instrument for recording the height of the liquid in an endosmometer or for registering osmotic pressures.

Osmometer noun [ Greek ... impulse + -meter .] (Physics) An instrument for measuring the amount of osmotic action in different liquids.

Osmometry noun (Physics) The study of osmose by means of the osmometer.

Osmose 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 noun [ New Latin ] Osmose.

Osmotic adjective Pertaining to, or having the property of, osmose; as, osmotic force.

Osmund 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 noun A species of coarse linen, originally made in Osnaburg , Germany.

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

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

Ossean noun (Zoology) A fish having a bony skeleton; a teleost.

Ossein 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 noun [ French]
1. A little bone.

2. (Zoology) The internal bone, or shell, of a cuttlefish.

Osseous 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 noun [ Russ, osetr' sturgeon.] (Zoology) A species of sturgeon.

Ossianic 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 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 adjective Having small bones.

Ossiculum noun ; plural Ossicula . [ Latin , a little bone.] (Zoology) Same as Ossicle .

Ossiferous adjective [ Latin os , ossis , a bone + -ferous : confer French ossifère .] Containing or yielding bone.

Ossific 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 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.