Stannous /(-nŭs)/

Stan·nous

Stannous

a.
  1. Pertaining to, or containing, tin; specifically, designating those compounds in which the element has a lower valence as contrasted with stannic compounds. (Chem.)

Phrases & Compounds
Stannous chloride
a white crystalline substance, SnCl2.(H2O)2, obtained by dissolving tin in hydrochloric acid. It is used as a mordant in dyeing.