- sulfur, S, sulphur, atomic number 16 - 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)
--1 is a kind of chemical element, element
--1 is a substance of
--1 has particulars: brimstone, native sulfur, native sulphursulfide, sulphide; vitriol, oil of vitriol, sulfuric acid, sulphuric acid Derived form: verb sulfur1