D defs.my
Entry 1 sense Webster, 1913

Sulphauric

· Sulph·au·ric · IPA
01 a. Of, pertaining to, or designating, a hypothetical sulphacid of gold (aurum), known only in its salts.
  1. 1.
    Of, pertaining to, or designating, a hypothetical sulphacid of gold (aurum), known only in its salts.(Chem.)