sulfur

nouns

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)
S, atomic number 16, sulfur, sulphur
is derived from
sulfuric
is derived from
sulfurous

verbs

treat with sulphur in order to preserve
"These dried fruits are sulphured"
sulfur, sulphur