Open English Wordnet
(n)Centum languagean Indo-European language that shows distinctive preservation of the Proto-Indo-European labiovelars and that shows a historical development of velar articulations, as the sounds (k) or [kh] from Proto-Indo-European palatal phonemes.“The Centum languages show characteristic plain velars and labiovelars articulated at the back of the mouth in inherited Indo-European lexical items.”