atomic number 16, sulfur, sulphur, S - an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

pyrites - any of various metallic-looking sulfides (of which pyrite is the commonest)

chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

hydrogen sulfide - a sulfide having the unpleasant smell of rotten eggs

iron disulfide - a compound containing two atoms of sulfur combined with iron

cadmium sulfide - a yellow sulfide used chiefly as a pigment