- one hundred.
- belonging to or consisting of those branches of the Indo-European family of languages that preserve the Proto-Indo-European labiovelar stops but merge the palatal stops into the velar stops. The centum branches include Germanic, Celtic, Italic, and Hellenic.
- denoting or belonging to the Indo-European languages in which original velar stops (k) were not palatalized, namely languages of the Hellenic, Italic, Celtic, Germanic, Anatolian, and Tocharian branches
