Aphtha :: Aphtha (n.) One of the whitish specks called aphthae.

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

Aphthae :: Aphthae (n. pl.) Roundish pearl-colored specks or flakes in the mouth, on the lips, etc., terminating in white sloughs. They are commonly characteristic of thrush..

Aphthoid :: Aphthoid (a.) Of the nature of aphthae; resembling thrush.

Aphthong :: Aphthong (n.) A letter, or a combination of letters, employed in spelling a word, but in the pronunciation having no sound..

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

Dinaphthyl :: Dinaphthyl (n.) A colorless, crystalline hydrocarbon, C20H14, obtained from naphthylene, and consisting of a doubled naphthylene radical..

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..

Naphtha :: Naphtha (n.) One of several volatile inflammable liquids obtained by the distillation of certain carbonaceous materials and resembling the naphtha from petroleum; as, Boghead naphtha, from Boghead coal (obtained at Boghead, Scotland); crude naphtha, or light oil, from coal tar; wood naphtha, from wood, etc..

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

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..

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..

Naphthalic :: Naphthalic (a.) Pertaining to, derived from, or related to, naphthalene; -- used specifically to denote any one of a series of acids derived from naphthalene, and called naphthalene acids..

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

Naphthalidine :: Naphthalidine (n.) Same as Naphthylamine.

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

Naphthaline :: Naphthaline (n.) See Naphthalene.

Naphthalize :: Naphthalize (v. t.) To mingle, saturate, or impregnate, with naphtha..

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

Naphthene :: Naphthene (n.) A peculiar hydrocarbon occuring as an ingredient of Caucasian petroleum.

Naphthide :: Naphthide (n.) A compound of naphthalene or its radical with a metallic element; as, mercuric naphthide..

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..

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..

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

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

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

Octonaphthene :: Octonaphthene (n.) A colorless liquid hydrocarbon of the octylene series, occurring in Caucasian petroleum..

Paranaphthalene :: Paranaphthalene (n.) Anthracene; -- called also paranaphthaline.

Thionaphthene :: Thionaphthene (n.) A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives..

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