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hich the people of a colony derive their origin. -- Mother liquor (Chem.), the impure or complex residual solution which remains after the salts readily or regularly crystallizing have been removed. -- Mother queen, the mother of a reigning sovereign; a queen mother. -- Mother tongue. (a) A language from which anoth…

a negress by a white man, or of a white woman by a negro, -- usually of a brownish yellow complexion.

A complex nitrogenous substance obtained from murexide, alloxantin, and other ureids, as a white, or yellowish, crystalline which turns red on exposure to the air; -- called also uramil, dialuramide, and formerly purpuric acid.

A complex nitrogenous compound obtained as a scarlet crystalline substance, and regarded as related to murexide.

Pertaining to, or designating, a complex nitrogenous acid of the alloxan group, obtained as a honey-yellow powder. Its solutions have a gelatinous consistency.

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…

blue, Naphthol orange, Naphthol yellow (Chem.), brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone.

A complex, oily, nitrogenous base, isomeric with nicotine, and obtained by the reduction of certain derivatives of the pyridine group.

The complex, nitrogenous, organic base and dyestuff called also aniline black.

Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone.

Pertaining to, derived from, or designating, a complex acid called nitroprussic acid, obtained indirectly by the action of nitric acid on potassium ferrocyanide (yellow prussiate), as a red crystalline unstable substance. It forms salts called nitroprussides, which give a rich purple color with alkaline subphides.…

A genus of marine flagellate Infusoria, remarkable for their unusually large size and complex structure, as well as for their phosphorescence. The brilliant diffuse phosphorescence of the sea is often due to myriads of Noctilucæ.

An instrument for determining and registering the duration of more or less complex operations of the mind. Dunglison.

be confused with the bouquet, or aroma, of wine) found in wine lees, and consisting of a complex mixture of the ethereal salts of several of the higher acids of the acetic acid series. It has an ethereal odor, and it used in flavoring artificial wines and liquors. Called also oil of wine. See Essential oil, under Esse…

A complex bitter gum, found on the leaves of the olive tree; -- called also olivite.

A component part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine.

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.

A complex nitrogenous substance C3N3H5O3 obtained from alloxan (or when urea is fused with ethyl oxamate), as a stable white crystalline powder; -- called also oxaluramide.

Pertaining to, or designating, a complex nitrogenous acid related to the ureids, and obtained from parabanic acid as a white silky crystalline substance.

Pertaining to, or designating, a complex nitrogenous acid (C4H5N3O4) not known in the free state, but obtained, in combination with its salts, by a slow oxidation of uric acid, to which it is related.