Wordnet 3.0
NOUN (1)
1. 
 a compound of sulphur and some other element that is more electropositive; 
[syn: sulfide, sulphide]
WordNet (r) 3.0 (2006):
sulfide
    n 1: a compound of sulphur and some other element that is more
         electropositive [syn: sulfide, sulphide]