Search the Dictionary

A compound formed by the union of amidogen with an acid element or radical. It may also be regarded as ammonia in which one or more hydrogen atoms have been replaced by an acid atom or radical. Acid amide, a neutral compound formed by the substitution of the amido group for hydroxyl in an acid.

A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido.

nces derived from ammonia by replacement of one or more hydrogen atoms by a basic atom or radical.

A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.

A hydrocarbon radical, C5H11, of the paraffine series found in amyl alcohol or fusel oil, etc.

A compound of the radical amyl with oxygen and a positive atom or radical.

An oxide of a nonmetallic body or an organic radical, capable of forming an acid by uniting with the elements of water; -- so called because it may be formed from an acid by the abstraction of water.

amines. It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colorless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made.

The univalent radical, CH3OC6H4, of which anisol is the hydride.

A compound of antimonic acid with a base or basic radical. [Written also antimoniate.]

A compound of antimonious acid and a base or basic radical.

s overbearing in his temper or habits; a proud or haughty person. A born aristocrat, bred radical. Mrs. Browning.

A compound of arsenic with a metal, or positive element or radical; -- formerly called arseniuret.

Combined with arsenic; -- said some elementary substances or radicals; as, arseniureted hydrogen. [Also spelt arseniuretted.]

Even; not odd; -- said of elementary substances and of radicals the valence of which is divisible by two without a remainder.

The alloy or metal to be assayed. Ure. Assay and essay are radically the same word; but modern usage has appropriated assay chiefly to experiments in metallurgy, and essay to intellectual and bodily efforts. See Essay.]

A double cyanide of gold and some other metal or radical; -- called also cyanaurate.

passing through the center of the pupil, and perpendicular to the surface of the eye. -- Radical axis of two circles (Geom.), the straight line perpendicular to the line joining their centers and such that the tangents from any point of it to the two circles shall be equal to each other. -- Spiral axis (Arch.), the a…

ecially applied to compounds containing a two atom nitrogen group uniting two hydrocarbon radicals, as in azobenzene, azobenzoic, etc. These compounds furnish many artificial dyes. See Diazo-.

A member of the radical section of the Democratic party in New York, about the middle of the 19th century, which was hostile to extension of slavery, public debts, corporate privileges, etc., and supported Van Buren against Cass for president in 1848; --opposed to Hunker. [Political Cant, U. S.]