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Ketone :: Ketone (n.) One of a large class of organic substances resembling the aldehydes, obtained by the distillation of certain salts of organic acids and consisting of carbonyl (CO) united with two hydrocarbon radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor..

Formyl :: Formyl (n.) A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde..

Metathesis :: Metathesis (n.) The act, process, or result of exchange, substitution, or replacement of atoms and radicals; thus, by metathesis an acid gives up all or part of its hydrogen, takes on an equivalent amount of a metal or base, and forms a salt..

Paronymous :: Paronymous (a.) Having the same derivation; allied radically; conjugate; -- said of certain words, as man, mankind, manhood, etc..

Formative :: Formative (n.) That which serves merely to give form, and is no part of the radical, as the prefix or the termination of a word..

Xylylene :: Xylylene (n.) Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol..

Dibasic :: Dibasic (a.) Having two acid hydrogen atoms capable of replacement by basic atoms or radicals, in forming salts; bibasic; -- said of acids, as oxalic or sulphuric acids. Cf. Diacid, Bibasic..

Radical :: Radical (n.) One who advocates radical changes in government or social institutions, especially such changes as are intended to level class inequalities; -- opposed to conservative..

Colicroot :: Colicroot (n.) A bitter American herb of the Bloodwort family, with the leaves all radical, and the small yellow or white flowers in a long spike (Aletris farinosa and A. aurea). Called sometimes star grass, blackroot, blazing star, and unicorn root..

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

Nitrosyl :: Nitrosyl (n.) the radical NO, called also the nitroso group. The term is sometimes loosely used to designate certain nitro compounds; as, nitrosyl sulphuric acid. Used also adjectively..

Metalammonium :: Metalammonium (n.) A hypothetical radical derived from ammonium by the substitution of metallic atoms in place of hydrogen.

Conjugate :: Conjugate (a.) Containing two or more radicals supposed to act the part of a single one.

Fluosilicate :: Fluosilicate (n.) A double fluoride of silicon and some other (usually basic) element or radical, regarded as a salt of fluosilicic acid; -- called also silicofluoride..

Radical :: Radical (n.) Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; -- called also a compound radical. Cf. Residue..

Amylate :: Amylate (n.) A compound of the radical amyl with oxygen and a positive atom or radical.

Servile :: Servile (n.) An element which forms no part of the original root; -- opposed to radical.

Cetyl :: Cetyl (n.) A radical, C16H33, not yet isolated, but supposed to exist in a series of compounds homologous with the ethyl compounds, and derived from spermaceti..

Phthalyl :: Phthalyl (n.) The hypothetical radical of phthalic acid.

Root :: Root (v. t.) To plant and fix deeply in the earth, or as in the earth; to implant firmly; hence, to make deep or radical; to establish; -- used chiefly in the participle; as, rooted trees or forests; rooted dislike..

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