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An order of vitreous sponges, having glassy six-rayed, siliceous spicules; -- called also Hexactinellinæ.

A photographic picture copied from the negative on glass; a photographic transparency. R. Hunt.

See Hydrocyanide.

Pertaining to, or derived from the combination of, hydrogen and cyanogen. Hydrocyanic acid (Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocya…

A compound of hydrocyanic acid with a base; -- distinguished from a cyanide, in which only the cyanogen so combines.

Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen; as, hydroferricyanic acid. See Ferricyanic.

Pertaining to, or containing, or obtained from, hydrogen, ferrous iron, and cyanogen; as, hydroferrocyanic acid. See Ferrocyanic.

An alkaloid found in henbane (Hyoscyamus niger), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white crystalline substance, with a sharp, offensive taste. Hyoscyamine is isomeric with atropine, is very poisonous, and is used as…

The leaves of the black henbane (Hyoscyamus niger), used in neuralgic and pectorial troubles.

rtaining to one or more small elements in the hyoidean arch of fishes, between the caratohyal and urohyal. -- n.

An Indian crested pheasant of the genus Lophophorus. Several species are known. Called also monaul, monal.

A French fop or dandy of the time of the Directory; hence, any fop.

Pert. to the Indo-Aryans, or designating, or of, the Aryan languages of India.

The yard adjoining an inn.

An interhyal ligament or cartilage.

Designating an acid isomeric with cyanic acid. Isocyanic acid, an acid metameric with cyanic acid, and resembling it in its salts. It is obtained as a colorless, mobile, unstable liquid by the heating cyanuric acid. Called technically carbimide.

Designating, or pertaining to, an acid isomeric with cyanuric acid, and called also fulminuric acid. See under Fulminuric.

A salt of isosulphocyanic acid.

Pertaining to, or designating, an acid, HNCS, isomeric with sulphocyanic acid.

Enjoyment; gayety; festivity; joyfulness. Spenser. Some days of joyance are decreed to all. Byron. From what hid fountains doth thy joyance flow Trench.