Ora (pl. ) of Os
Os (n.) A mouth; an opening; an entrance.
Osar (pl. ) of Os
Os (n.) One of the ridges of sand or gravel found in Sweden, etc., supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar.
Osage orange () An ornamental tree of the genus Maclura (M. aurantiaca), closely allied to the mulberry (Morus); also, its fruit. The tree was first found in the country of the Osage Indians, and bears a hard and inedible fruit of an orangelike appearance. See Bois d'arc.
Osages (n. pl.) A tribe of southern Sioux Indians, now living in the Indian Territory.
Osanne (n.) Hosanna.
Osar (n. pl.) See 3d Os.
Oscan (a.) Of or pertaining to the Osci, a primitive people of Campania, a province of ancient Italy.
Oscan (n.) The language of the Osci.
Oscillancy (n.) The state of oscillating; a seesaw kind of motion.
Oscillaria (n.) A genus of dark green, or purplish black, filamentous, fresh-water algae, the threads of which have an automatic swaying or crawling motion. Called also Oscillatoria.
Oscillated (imp. & p. p.) of Oscillate
Oscillating (p. pr. & vb. n.) of Oscillate
Oscillate (v. i.) To move backward and forward; to vibrate like a pendulum; to swing; to sway.
Oscillate (v. i.) To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth.
Oscillating (a.) That oscillates; vibrating; swinging.
Oscillation (n.) The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration.
Oscillation (n.) Fluctuation; variation; change back and forth.
Oscillative (a.) Tending to oscillate; vibratory.
Oscillatoria (n. pl.) Same as Oscillaria.
Oscillatory (a.) Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion.
Oscine (a.) Relating to the Oscines.
Oscines (n. pl.) Singing birds; a group of the Passeres, having numerous syringeal muscles, conferring musical ability.
Oscinian (n.) One of the Oscines, or singing birds.
Oscinian (n.) Any one of numerous species of dipterous files of the family Oscinidae.
Oscinine (a.) Of or pertaining to the Oscines.
Oscitancy (n.) The act of gaping or yawning.
Oscitancy (n.) Drowsiness; dullness; sluggishness.
Oscitant (a.) Yawning; gaping.
Oscitant (a.) Sleepy; drowsy; dull; sluggish; careless.
Oscitantly (adv.) In an oscitant manner.
Oscitate (v. i.) To gape; to yawn.
Oscitation (n.) The act of yawning or gaping.
Osculant (a.) Kissing; hence, meeting; clinging.
Osculant (a.) Adhering closely; embracing; -- applied to certain creeping animals, as caterpillars.
Osculant (a.) Intermediate in character, or on the border, between two genera, groups, families, etc., of animals or plants, and partaking somewhat of the characters of each, thus forming a connecting link; interosculant; as, the genera by which two families approximate are called osculant genera.
Osculated (imp. & p. p.) of Osculate
Osculating (p. pr. & vb. n.) of Osculate
Osculate (v. t.) To kiss.
Osculate (v. t.) To touch closely, so as to have a common curvature at the point of contact. See Osculation, 2.
Osculate (v. i.) To kiss one another; to kiss.
Osculate (v. i.) To touch closely. See Osculation, 2.
Osculate (v. i.) To have characters in common with two genera or families, so as to form a connecting link between them; to interosculate. See Osculant.
Osculation (n.) The act of kissing; a kiss.
Osculation (n.) 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.
Osculatory (a.) Of or pertaining to kissing; kissing.
Osculatory (a.) 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 (n.) Same as Pax, 2.
Osculatrixes (pl. ) of Osculatrix
Osculatrix (n.) 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 (n.) One of the excurrent apertures of sponges.
Oscula (pl. ) of Osculum
Osculum (n.) Same as Oscule.
-ose () A suffix denoting full of, containing, having the qualities of, like; as in verbose, full of words; pilose, hairy; globose, like a globe.
-ose () A suffix indicating that the substance to the name of which it is affixed is a member of the carbohydrate group; as in cellulose, sucrose, dextrose, etc.
Osier (n.) 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.
Osier (n.) One of the long, pliable twigs of this plant, or of other similar plants.
Osier (a.) Made of osiers; composed of, or containing, osiers.
Osiered (a.) Covered or adorned with osiers; as, osiered banks.
Osiery (n.) An osier bed.
Osiris (n.) 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. Cf. Serapis.
Osmanlis (pl. ) of Osmanli
Osmanli (n.) A Turkish official; one of the dominant tribe of Turks; loosely, any Turk.
Osmate (n.) A salt of osmic acid.
Osmateria (pl. ) of Osmaterium
Osmaterium (n.) One of a pair of scent organs which the larvae of certain butterflies emit from the first body segment, either above or below.
Osmazome (n.) 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 (n.) A salt of osmiamic acid.
Osmiamic (a.) Of, pertaining to, or designating, a nitrogenous acid of osmium, H2N2Os2O5, forming a well-known series of yellow salts.
Osmic (a.) 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.
Osmidrosis (n.) The secretion of fetid sweat.
Osmious (a.) Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride.
Osmite (n.) A salt of osmious acid.
Osmium (n.) 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.
Osmometer (n.) An instrument for measuring the amount of osmotic action in different liquids.
Osmometry (n.) The study of osmose by means of the osmometer.
Osmose (n.) 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.
Osmose (n.) The action produced by this tendency.
Osmosis (n.) Osmose.
Osmotic (a.) Pertaining to, or having the property of, osmose; as, osmotic force.
Osmund (n.) 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 (n.) A species of coarse linen, originally made in Osnaburg, Germany.
Oso-berry (n.) The small, blueblack, drupelike fruit of the Nuttallia cerasiformis, a shrub of Oregon and California, belonging to the Cherry tribe of Rosaceae.
Osphradia (pl. ) of Osphradium
Osphradium (n.) The olfactory organ of some Mollusca. It is connected with the organ of respiration.
Osprey (n.) Alt. of Ospray
Ospray (n.) The fishhawk.
Oss (n.) To prophesy; to presage.
Osse (n.) A prophetic or ominous utterance.
Ossean (n.) A fish having a bony skeleton; a teleost.
Ossein (n.) 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 (n.) A little bone.
Osselet (n.) The internal bone, or shell, of a cuttlefish.
Osseous (a.) Composed of bone; resembling bone; capable of forming bone; bony; ossific.
Osseter (n.) A species of sturgeon.
Ossianic (a.) Of or pertaining to, or characteristic of, Ossian, a legendary Erse or Celtic bard.
Ossicle (n.) A little bone; as, the auditory ossicles in the tympanum of the ear.
Ossicle (n.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.
Ossiculated (a.) Having small bones.