Search the Dictionary

resemble a shrill laughing. -- Laughing gas (Chem.), hyponitrous oxide, or protoxide of nitrogen; -- so called from the exhilaration and laughing which it sometimes produces when inhaled. It is much used as an anæsthetic agent. -- Laughing goose (Zoöl.), the European white-fronted goose. -- Laughing gull. (Zoöl.) (…

A complex, nitrogenous phosphorized substance widely distributed through the animal body, and especially conspicuous in the brain and nerve tissue, in yolk of eggs, and in the white blood corpuscles.

A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom…

A nitrogenous organic base from coal tar, and identical with quinoline. Cf. Quinoline.

Pertaining to, or designating, a nitrogenous organic substance of the uric acid group, called leucoturic acid or oxalantin. See Oxalantin.

nt limpid liquid, slightly blue in color, consisting of a mixture of liquefied oxygen and nitrogen. It is prepared by subjecting air to great pressure and then cooling it by its own expansion to a temperature below the boiling point of its constituents (N -194º C; O -183º C.).

A nitrogenous organic base obtained by the oxidation of amarine, and regarded as a derivative of benzoic aldehyde. It is obtained in long white crystalline tufts, -- whence its name.

A strong nitrogenous base, C3H6N6, produced from several cyanogen compounds, and obtained as a white crystalline substance, -- formerly supposed to be produced by the decomposition of melam. Called also cyanuramide.

A complex nitrogenous hydrocarbon obtained artificially (as by the action of cyanogen chloride on aniline) as a white, crystalline substance; -- called also diphenyl guanidin.

Pertaining to, or designating, a complex nitrogenous acid obtained by decomposition of melam, or of urea, as a white crystalline powder; -- called also melanurenic acid.

r produce acid, rather than basic, properties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc., are metalloids.

Any one of a series of complex nitrogenous substances regarded as derived from one molecule of urea; as, alloxan is a monureid. [Written also monureide.]

A yellowish white, amorphous, nitrogenous substance found in wheat, rye, etc., and resembling gluten; -- formerly called also mucin.

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 crystalline nitrogenous substance having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly called also ammonium purpurate.

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.

phthol 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.