D defs.my
Entry 1 sense Webster, 1913

Hypophosphorous

· Hy·po·phos·phor·ous · IPA
01 a. Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphorous acid.
  1. 1.
    Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphorous acid.(Chem.)
Phrases & compounds
Hypophosphorous acid — , an acid, H3PO2, whose salts are produced by the action of barium hygrate on phosphorus. It may be obtained from its water solution, by exaporation and freezing, as a white crystalline substance. It is a powerful reducing agent.