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Sometimes used as equivalent to mono-, as indicating that the compound has but one atom of the element to the name of which it is prefixed. Also used adjectively.

A single zooid of a compound protozoan.

c acid, but formerly called prussic acid, because Prussian blue is derived from it or its compounds. See Hydrocyanic.

One of the soft gelatinous cones found in the compound eyes of certain insects, taking the place of the crystalline cones of others.

A species of food of a soft or moderately hard consistence, variously made, but often a compound of flour or meal, with milk and eggs, etc. And solid pudding against empty praise. Pope.

le or purple-red color. Specif. (Chem.), used in designating certain brilliant purple-red compounds of cobaltic chloride and ammonia, similar to the roseocobaltic compounds. See Cobaltic.

ontained in uric acid. It is not known in the pure state, but forms well-known purple-red compounds (as murexide), whence its name.

A kind of thick paste or cement compounded of whiting, or soft carbonate of lime, and linseed oil, when applied beaten or kneaded to the consistence of dough, -- used in fastening glass in sashes, stopping crevices, and for similar purposes. Putty powder, an oxide of tin, or of tin and lead in various proportions, much…

A crude acetate produced by treating pyroligneous acid with a metal or basic compound; as, pyrolignite of iron (iron liquor).

An unsaturated cyclic compound, C5H4O2, of which two varieties are known, a and g. g-pyrone is the parent substance of several natural yellow dyestuffs.

Any compound ascidian of the genus Pyrosoma. The pyrosomes form large hollow cylinders, sometimes two or three feet long, which swim at the surface of the sea and are very phosphorescent.

A complex nitrogenous compound obtained by heating together pyruvic acid and urea.

Pertaining to, derived from, or connected with, quinine and related compounds; specifically, designating a nonnitrogenous acid obtained from cinchona bark, coffee, beans, etc., as a white crystalline substance. [Written also chinic, kinic.]

elongated axis and many one-flowered lateral pedicels, as in the currant and chokecherry. Compound raceme, one having the lower pedicels developed into secondary racemes.

A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon.

eight, 226.4. Radium was discovered by M. and Mme. Curie, of Paris, who in 1902 separated compounds of it by a tedious process from pitchblende. Its compounds color flames carmine and give a characteristic spectrum. It resembles barium chemically. Radium preparations are remarkable for maintaining themselves at a highe…

The sweepings of society; the rabble; the mob; -- chiefly used in the compound or duplicate, riffraff.

mber, quantity, or degree; rate; proportion; as, the ratio of representation in Congress. Compound ratio, Duplicate ratio, Inverse ratio, etc. See under Compound, Duplicate, etc. -- Ratio of a geometrical progression, the constant quantity by which each term is multiplied to produce the succeeding one.…

Expressing the type, structure, relations, and reactions of a compound; graphic; -- said of formulæ. See under Formula. Rational horizon. (Astron.) See Horizon, 2 (b). -- Rational quantity (Alg. ), one that can be expressed without the use of a radical sign, or in extract parts of unity; -- opposed to irrational or ra…

esnake fern (Bot.), a common American fern (Botrychium Virginianum) having a triangular decompound frond and a long-stalked panicle of spore cases rising from the middle of the frond. -- Rattlesnake grass (Bot.), a handsome American grass (Glyceria Canadensis) with an ample panicle of rather large ovate spikelets, eac…