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A binary compound of sulphur, or one so regarded; -- formerly called sulphuret. Double sulphide (Chem.), a compound of two sulphides. -- Hydrogen sulphide. (Chem.) See under Hydrogen. -- Metallic sulphide, a binary compound of sulphur with a metal.

A sulphide having two atoms of sulphur in the molecule; a disulphide, as in iron pyrites, FeS2; -- less frequently called bisulphuret.

r containing two atoms of sulphur in each molecule; -- formerly called disulphuret. Cf. Bisulphide.

One of a series of compounds, derived from hydrogen sulphide by the replacement of half its hydrogen by a base or basic radical; as, potassium hydrosulphide, KSH. The hydrosulphides are analogous to the hydrates and include the mercaptans.

A sulphide containing one atom of sulphur, and analogous to a monoxide; -- contrasted with a Ant: polysulphide; as, galena is a monosulphide.

A ternary compound of oxygen and sulphur.

A sulphide containing more sulphur than some other compound of the same elements; as, iron pyrites is a persulphide; -- formerly called persulphuret.

A sulphide having more than one atom of sulphur in the molecule; -- contrasted with monosulphide.

That one of a series of sulphides of any element which has the lowest proportion of sulphur; a sulphide with but one atom of sulphur in the molecule.

A sulphide, analogous to a sesquioxide, containing three atoms of sulphur to two of the other ingredient; -- formerly called also sesquisulphuret; as, orpiment, As2S3 is arsenic sesquisulphide.

A nonacid compound consisting of one equivalent of sulphur and more than one equivalent of some other body, as a metal.

A trisulphide.

A sulphide containing three atoms of sulphur.

class formed by the combination of an acid and a base, or by the union of two oxides, two sulphides, selenides, or tellurides, as distinguished from a haloid compound. [R.] Berzelius.

Sulphide of silver; -- also called vitreous silver, or silver glance. It has a metallic luster, a lead-gray color, and is sectile like lead.

Whence many a bursting stream auriferous plays. Thomson. ~= pyrites, iron pyrites (iron disulphide), containing some gold disseminated through it.

of about three parts of copper to one of tin; -- used for making bells. Bell metal ore, a sulphide of tin, copper, and iron; the mineral stannite.

A double sulphide of antimony and iron, of a dark steel-gray color.

or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably.

Native bismuth sulphide; -- sometimes called bismuthite.