D defs.my
Entry 1 sense Webster, 1913

Bisulphate

· Bi·sul·phate · IPA
01 n. 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 …
  1. 1.
    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.(Chem.)