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Terephthalic :: Terephthalic (a.) Of, pertaining to, or designating, a dibasic acid of the aromatic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic..

Aphtha :: Aphtha (n.) The disease, also called thrush..

Phthalic :: Phthalic (a.) Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances..

Naphthol :: Naphthol (n.) Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor..

Naphthyl :: Naphthyl (n.) A hydrocarbon radical regarded as the essential residue of naphthalene.

Naphthalic :: Naphthalic (a.) Formerly, designating an acid probably identical with phthalic acid..

Bitumen :: Bitumen (n.) By extension, any one of the natural hydrocarbons, including the hard, solid, brittle varieties called asphalt, the semisolid maltha and mineral tars, the oily petroleums, and even the light, volatile naphthas..

Naphthalene :: Naphthalene (n.) A white crystalline aromatic hydrocarbon, C10H8, analogous to benzene, and obtained by the distillation of certain bituminous materials, such as the heavy oil of coal tar. It is the type and basis of a large number of derivatives among organic compounds. Formerly called also naphthaline..

Aphthous :: Aphthous (a.) Pertaining to, or caused by, aphthae; characterized by aphtae; as, aphthous ulcers; aphthous fever..

Naphthylamine :: Naphthylamine (n.) One of two basic amido derivatives of naphthalene, C10H7.NH2, forming crystalline solids..

Anthracene :: Anthracene (n.) A solid hydrocarbon, C6H4.C2H2.C6H4, which accompanies naphthalene in the last stages of the distillation of coal tar. Its chief use is in the artificial production of alizarin..

Naphthalate :: Naphthalate (n.) A salt of naphthalic acid; a phthalate.

Naphthoic :: Naphthoic (a.) Pertaining to, derived from, or related to, naphthalene; -- used specifically to designate any one of a series of carboxyl derivatives, called naphthoic acids..

Naphtha :: Naphtha (n.) The complex mixture of volatile, liquid, inflammable hydrocarbons, occurring naturally, and usually called crude petroleum, mineral oil, or rock oil. Specifically: That portion of the distillate obtained in the refinement of petroleum which is intermediate between the lighter gasoline and the heavier benzine, and has a specific gravity of about 0.7, -- used as a solvent for varnishes, as a carburetant, illuminant, etc..

Naphthalin :: Naphthalin (n.) Alt. of Naphthalin.

Picoline :: Picoline (n.) Any one of three isometric bases (C6H7N) related to pyridine, and obtained from bone oil, acrolein ammonia, and coal-tar naphtha, as colorless mobile liquids of strong odor; -- called also methyl pyridine..

Naphthaline :: Naphthaline (n.) See Naphthalene.

Naphthazarin :: Naphthazarin (n.) A dyestuff, resembling alizarin, obtained from naphthoquinone as a red crystalline substance with a bright green, metallic luster; -- called also naphthalizarin..

Benzene :: Benzene (n.) A volatile, very inflammable liquid, C6H6, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or benzole, and also, but rarely, to a similar mixed product of petroleum..

Naphthoquinone :: Naphthoquinone (n.) A yellow crystalline substance, C10H6O2, analogous to quinone, obtained by oxidizing naphthalene with chromic acid..

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