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Of, pertaining to, or designating, hydrogen sulphide, which is regarded as an acid, especially when in solution.

sphate. It has been superseded by per-, bi-, di-, acid, etc. (as peroxide, bicarbonate, disulphide, and acid sulphate), which retain the old meanings of super-, but with sharper definition. Cf. Acid, a., Bi-, Di-, and Per-.

ted hydrogen (Chem.), hydrogen telluride, H2Te, a gaseous substance analogous to hydrogen sulphide; -- called also tellurhydric acid.

A blackish lead-gray mineral, closely related to tetrahedrite. It is essentially a sulphide of arsenic and copper.

A trisulphide. [R.]

A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase.

A colorless oily liquid, (C2H5)2S2, having a strong garlic odor; -- called also ethyl disulphide. By extension, any one of the series of related compounds.

combining part, or the third degree of that to the name of which it is prefixed; as in trisulphide, trioxide, trichloride.

Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color.

silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively. Green ultramarine, a green pigment obtained as a first product in the manufacture of ultramarine, into which it is changed by subsequent treatment. -- Ultramarine ash or ashes…

A bright red pigment consisting of mercuric sulphide, obtained either from the mineral cinnabar or artificially. It has a fine red color, and is much used in coloring sealing wax, in printing, etc.

An oxysulphide of lead occurring in implanted spherical globules of a yellowish or brownish color; -- called also voltzine.

e of several white alloys, as pewter, britannia, etc. (b) (Metal.) A fine grade of copper sulphide obtained at a certain stage in copper smelting. -- White miller. (Zoöl.) (a) The common clothes moth. (b) A common American bombycid moth (Spilosoma Virginica) which is pure white with a few small black spots; -- called…

as (Min.), a hydrous sulphate of iron; -- called also copiapite. -- Yellow copper ore, a sulphide of copper and iron; copper pyrites. See Chalcopyrite. -- Yellow cress (Bot.), a yellow-flowered, cruciferous plant (Barbarea præcox), sometimes grown as a salad plant. -- Yellow dock. (Bot.) See the Note under Dock. --…

Native sulphide of arsenic, including sandarach, or realgar, and orpiment.

rbs oxygen with rapidity. -- Zinc blende Etym: [cf. G. zinkblende] (Min.), a native zinc sulphide. See Blende, n. (a) -- Zinc bloom Etym: [cf. G. zinkblumen flowers of zinc, oxide of zinc] (Min.), hydrous carbonate of zinc, usually occurring in white earthy incrustations; -- called also hydrozincite. -- Zinc ethyl (C…

A steel-gray metallic mineral, a sulphide of antimony and lead.