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Ethenyl :: Ethenyl (n.) A trivalent hydrocarbon radical, CH3.C..

Ultraism :: Ultraism (n.) The principles of those who advocate extreme measures, as radical reform, and the like..

Formative :: Formative (a.) Serving to form; derivative; not radical; as, a termination merely formative..

Arsenide :: Arsenide (n.) A compound of arsenic with a metal, or positive element or radical; -- formerly called arseniuret..

Polybasic :: Polybasic (a.) Capable of neutralizing, or of combining with, several molecules of a monacid base; having several hydrogen atoms capable of being replaced by basic radicals; -- said of certain acids; as, sulphuric acid is polybasic..

Zircofluoride :: Zircofluoride (n.) A double fluoride of zirconium and hydrogen, or some other positive element or radical; as, zircofluoride of sodium..

Radical :: Radical (n.) A characteristic, essential, and fundamental constituent of any compound; hence, sometimes, an atom..

Octyl :: Octyl (n.) A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol..

Antimonite :: Antimonite (n.) A compound of antimonious acid and a base or basic radical.

Ultra- :: Ultra- (a.) A prefix from the Latin ultra beyond (see Ulterior), having in composition the signification beyond, on the other side, chiefly when joined with words expressing relations of place; as, ultramarine, ultramontane, ultramundane, ultratropical, etc. In other relations it has the sense of excessively, exceedingly, beyond what is common, natural, right, or proper; as, ultraconservative; ultrademocratic, ultradespotic, ultraliberal, ultraradical, etc..

Di- :: Di- () denoting two atoms, radicals, groups, or equivalents, as the case may be. See Bi-, 2..

Radicality :: Radicality (n.) Germinal principle; source; origination.

Met- :: Met- () That two replacing radicals, in the benzene nucleus, occupy the relative positions of 1 and 3, 2 and 4, 3 and 5, 4 and 6, 5 and 1, or 6 and 2; as, metacresol, etc. See Ortho-, and Para-..

Acetyl :: Acetyl (n.) A complex, hypothetical radical, composed of two parts of carbon to three of hydrogen and one of oxygen. Its hydroxide is acetic acid..

Octoyl :: Octoyl (n.) A hypothetical radical (C8H15O), regarded as the essential residue of octoic acid..

Anhydride :: Anhydride (n.) 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..

Methenyl :: Methenyl (n.) The hypothetical hydrocarbon radical CH, regarded as an essential residue of certain organic compounds..

Sesqui- :: Sesqui- () A combining form (also used adjectively) denoting that three atoms or equivalents of the substance to the name of which it is prefixed are combined with two of some other element or radical; as, sesquibromide, sesquicarbonate, sesquichloride, sesquioxide..

Halogen :: Halogen (n.) An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine..

Positive :: Positive (a.) Hence, basic; metallic; not acid; -- opposed to negative, and said of metals, bases, and basic radicals..

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