stannous

Relating to or containing tin, especially with valence 2.

Of, pertaining to, or containing tin: specifically applied to those compounds in which tin appears as a bivalent atom: as, stannous oxid, or protoxid of tin (SnO).

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

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

Containing bivalent tin.

of or relating to or containing tin