n. [ Pref. bi- + sulphate. ] (Chem.) A sulphate in which but half the hydrogen of the acid is replaced by a positive element or radical, thus making the proportion of the acid to the positive or basic portion twice what it is in the normal sulphates; an acid sulphate. [ 1913 Webster ]

n. [ Pref. di- + sulphate. ] (Chem.) (a) A salt of disulphuric or pyrosulphuric acid; a pyrosulphate. (b) An acid salt of sulphuric acid, having only one equivalent of base to two of the acid. [ 1913 Webster ]

n. (Chem.) Same as Hydrosulphurent. [ 1913 Webster ]

n. (Chem.) A salt of hyposulphuric acid. [ 1913 Webster ]

n. (Chem.) A sulphate of the peroxide of any base. [ R. ] [ 1913 Webster ]

n. (Chem.) A salt of pyrosulphuric acid. [ 1913 Webster ]

. A salt well known as a catharic under the name of Glauber's salt, which term is properly applied to the hydrate, Na2SO4.10H2O. [ Webster 1913 Suppl. ]

n. (Chem.) A sulphate with an excess of the base. [ 1913 Webster ]

n. [ Sulpho- + acid. ] (Chem.) An acid in which, to a greater or less extent, sulphur plays a part analogous to that of oxygen in an oxyacid; thus, thiosulphuric and sulpharsenic acids are sulphacids; -- called also sulphoacid. See the Note under Acid, n., 2. [ 1913 Webster ]

n. (Chem.) A salt of sulphamic acid. [ 1913 Webster ]

a. (Chem.) Of or pertaining to a sulphamide; derived from, or related to, a sulphamide; specifically, designating an amido acid derivative, NH2.SO2.OH, of sulphuric acid (analogous to sulphonic acid) which is not known in the free state, but is known in its salts. [ 1913 Webster ]

n. (Chem.) Any one of a series of amido compounds obtained by treating sulphuryl chloride with various amines. [ 1913 Webster ]

a. [ From sulphuric + anilene. ] (Chem.) Of, pertaining to, or designating, an anilene sulphonic acid which is obtained as a white crystalline substance. [ 1913 Webster ]

n. (Chem.) A salt of sulphantimonic acid. [ 1913 Webster ]

a. [ Sulpho- + antimonic. ] (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid of antimony (called also thioantimonic acid) analogous to sulpharsenic acid. [ 1913 Webster ]

a. (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid of antimony (called also thioantimonious acid) analogous to sulpharsenious acid. [ 1913 Webster ]

n. (Chem.) A salt of sulphantimonious acid. [ 1913 Webster ]

n. (Chem.) A salt of sulpharsenic acid. [ 1913 Webster ]

a. [ Sulpho- + arsenic. ] (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid (called also thioarsenic acid) analogous to arsenic acid, and known only in its salts. [ 1913 Webster ]

a. (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid (called also thioarsenious acid) analogous to arsenious acid, and known only in its salts. [ 1913 Webster ]

n. (Chem.) A salt of sulpharsenious acid. [ 1913 Webster ]

n. [ NL. sulphas, sulphatis, fr. L. sulphur, sulfur, brimstone, sulphur: cf. F. sulfate. ] (Chem.) A salt of sulphuric acid. [ 1913 Webster ]

a. (Chem.) Of, pertaining to, resembling, or containing, a sulphate or sulphates. [ 1913 Webster ]

(Chem.) A combining form (also used adjectively) denoting a sulphate as an ingredient in certain double salts; as, sulphato-carbonate. [ R. ] [ 1913 Webster ]

n. (Chem.) A salt of sulphauric acid. [ 1913 Webster ]

a. [ Sulpho- + aurum. ] (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid of gold (aurum), known only in its salts. [ 1913 Webster ]

n. (Chem.) An acid sulphate. [ Obs. ] [ 1913 Webster ]

n. (Chem.) A salt of thiosulphuric acid; -- formerly called hyposulphite. [ 1913 Webster ]

☞ The sodium salt called in photography by the name sodium hyposulphite, being used as a solvent for the excess of unchanged silver chloride, bromide, and iodide on the sensitive plate. [ 1913 Webster ]