1. (noun)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)
2. (verb)sulphur, sulfur treat with sulphur in order to preserve "These dried fruits are sulphured"
Definition of 'sulfur'
