a mineral, iron-black to steel-gray in color, with a metallic luster, copper iron tin sulfide, Cu 2 FeSnS 4 : an ore of tin.
a grey metallic mineral that consists of a sulphide of tin, copper, and iron and is a source of tin. Formula: Cu2FeSnS4
adjective, Chemistry. 1. containing tin, especially in the bivalent state. adjective 1. of or containing tin, esp in the divalent state stannous stan·nous (stān’əs) adj. Of, relating to, or containing tin, especially with valence 2. stannous (stān’əs) Containing tin, especially tin with a valence of 2. Compare stannic.
noun, Chemistry. 1. a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.
noun 1. a white, crystalline powder, SnF 2 , slightly soluble in water: used as a source of fluorine in the prevention of dental caries, especially as a toothpaste additive. stannous fluoride n. A preparation of stannous tin and fluoride used to fluoridate toothpaste and other dental preparations.
noun 1. tin. noun 1. an obsolete name for tin (sense 1) stannum stan·num (stān’əm) n. The element tin.