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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..

Pyridyl :: Pyridyl (n.) A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl..

Valence :: Valence (n.) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four..

Triad :: Triad (n.) An element or radical whose valence is three.

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..

Lipyl :: Lipyl (n.) A hypothetical radical of glycerin.

Degree :: Degree (n.) State as indicated by sum of exponents; more particularly, the degree of a term is indicated by the sum of the exponents of its literal factors; thus, a2b3c is a term of the sixth degree. The degree of a power, or radical, is denoted by its index, that of an equation by the greatest sum of the exponents of the unknown quantities in any term; thus, ax4 + bx2 = c, and mx2y2 + nyx = p, are both equations of the fourth degree..

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

Ceryl :: Ceryl (n.) A radical, C27H55 supposed to exist in several compounds obtained from Chinese wax, beeswax, etc..

Heptyl :: Heptyl (n.) A compound radical, C7H15, regarded as the essential radical of heptane and a related series of compounds..

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

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

Acrylic :: Acrylic (a.) Of or containing acryl, the hypothetical radical of which acrolein is the hydride; as, acrylic acid..

Formyl :: Formyl (n.) Formerly, the radical methyl, CH3..

Xenyl :: Xenyl (n.) The radical characteristic of xenylic compounds.

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

Radical :: Radical (a.) Belonging to, or proceeding from, the root of a plant; as, radical tubers or hairs..

Valeryl :: Valeryl (n.) The hypothetical radical C5H9O, regarded as the essential nucleus of certain valeric acid derivatives..

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..

Picryl :: Picryl (n.) The hypothetical radical of picric acid, analogous to phenyl..

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