1. (verb)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) Synonyms: due south, entropy, southward, sec, reciprocal ohm, south, second, siemens, sulfur, atomic number 16, randomness, sulphur, mho
2. (verb)sulphur, sulfur treat with sulphur in order to preserve Synonyms: sulphur, sulfur