D defs.my
Entry 2 senses Webster, 1913

Aurous

· Au·rous · IPA /ˈɔːɹəs/
01 a. Containing gold.
  1. 1.
    Containing gold.
  2. 2.
    Pertaining to, or derived from, gold; -- said of those compounds of gold in which this element has its lower valence; as, aurous oxide.(Chem.)