D defs.my
Entry 1 sense Webster, 1913

Sulphophosphoric

· Sul·pho·phos·phor·ic · IPA
01 a. Of, pertaining to, or designating, a hypothetical sulphacid of phosphorus, analogous to phosphoric acid, and known in its salts.
  1. 1.
    Of, pertaining to, or designating, a hypothetical sulphacid of phosphorus, analogous to phosphoric acid, and known in its salts.