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quids, and having peculiar pungent odors. These alkaloids are also called respectively dimethyl pyridine, ethyl pyridine, etc.

A white crystalline substance forming the ethyl salt of malamic acid.

Pertaining to, or designating, an acid of the ethylene series, metameric with fumaric acid and obtained by heating malic acid.

An unsaturated hydrocarbon, C30H60, of the ethylene series, obtained from beeswax as a white, scaly, crystalline wax; -- called also melissene, and melissylene.

less liquids having a strong, repulsive, garlic odor. The name is specifically applied to ethyl mercaptan, C2H5SH. So called from its avidity for mercury, and other metals.

ne of a series of compounds of certain metallic elements with organic radicals; as, zinc methyl, sodium ethyl, etc. [Written also metallorganic.]

ame molecular weight, but possessing a different structure and different properties; as, methyl ether and ethyl alcohol are metameric compounds. See Isomeric.

That variety of xylene, or dimethyl benzene, in which the two methyl groups occupy the meta position with reference to each other. It is a colorless inf

See Methylene.

A binary compound of methyl with some element; as, aluminium methide, Al2(CH3)6.

The technical name of methyl alcohol or wood spirit; also, by extension, the class name of any of the series of alcohols of the methane series of which methol proper is the type. See Methyl alcohol, under Methyl.

ish soluble powder used as a developer in photography. Chemically, it is the sulphate of methyl-p-amino-m-cresol.

A basic compound containing one amido group; as, methyl amine is a monamine.

Having the equivalence or replacing power of an atom of hydrogen; univalent; as, the methyl radical is monatomic.

ine, a crystalline body originally obtained from bile. Chemically, however, choline is oxyethyl-trimethyl-ammonium hydroxide, while neurine is vinyl-trimethyl-ammonium hydroxide. [Written also neurin.]

Any one of a series of metameric, unsaturated hydrocarbons C9H18 of the ethylene series.

Any one of a series of metameric hydrocarbons (C8H16) of the ethylene series. In general they are combustible, colorless liquids.

Pertaining to an acid now called sulphovinic, or ethyl sulphuric, acid.

ing or producing an oil; specifically, designating a colorless gaseous hydrocarbon called ethylene. [Archaic]

Olefiant gas, or ethylene; hence, by extension, any one of the series of unsaturated hydrocarbons of which ethylene is a type. See Ethylene.