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Methylene :: Methylene (n.) A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene..

Pentamethylene :: Pentamethylene (n.) A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene..

Hydrophlorone :: Hydrophlorone (n.) A white, crystalline benzene derivative, C8H10O2, obtained by the reduction of phlorone..

Toluid :: Toluid (n.) A complex double tolyl and toluidine derivative of glycocoll, obtained as a white crystalline substance..

Nitrosalicylic :: Nitrosalicylic (a.) Of, pertaining to, or designating, a nitro derivative of salicylic acid, called also anilic acid..

Cyamellone :: Cyamellone (n.) A complex derivative of cyanogen, regarded as an acid, and known chiefly in its salts; -- called also hydromellonic acid..

Derivative :: Derivative (n.) An agent which is adapted to produce a derivation (in the medical sense).

Phenylene :: Phenylene (n.) A hypothetic radical (C6H4) occurring in certain derivatives of benzene; as, phenylene diamine..

Erythrine :: Erythrine (n.) A colorless crystalline substance, C20H22O10, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid..

Nitraniline :: Nitraniline (n.) Any one of a series of nitro derivatives of aniline. In general they are yellow crystalline substances.

Naphthalenic :: Naphthalenic (a.) Pertaining to , or derived from, naphthalene; -- used specifically to designate a yellow crystalline substance, called naphthalenic acid and also hydroxy quinone, and obtained from certain derivatives of naphthol..

Ethylamine :: Ethylamine (n.) A colorless, mobile, inflammable liquid, C2H5.NH2, very volatile and with an ammoniacal odor. It is a strong base, and is a derivative of ammonia. Called also ethyl carbamine, and amido ethane..

Mes- :: Mes- () denoting a type of hydrocarbons which are regarded as methenyl derivatives. Also used adjectively.

Toluric :: Toluric (a.) Of, pertaining to, or designating, any one of three isomeric crystalline acids, C9H10ON.CO2H, which are toluyl derivatives of glycocoll..

Ae :: Ae () A diphthong in the Latin language; used also by the Saxon writers. It answers to the Gr. ai. The Anglo-Saxon short ae was generally replaced by a, the long / by e or ee. In derivatives from Latin words with ae, it is mostly superseded by e. For most words found with this initial combination, the reader will therefore search under the letter E..

Derivate :: Derivate (a.) Derived; derivative.

Stye :: Stycerin (n.) A triacid alcohol, related to glycerin, and obtained from certain styryl derivatives as a yellow, gummy, amorphous substance; -- called also phenyl glycerin..

Thionine :: Thionine (n.) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet..

Orthocarbonic :: Orthocarbonic (a.) Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4..

Primitively :: Primitively (adv.) Primarily; not derivatively.

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