n.
Pronunciation: ' kr ē - ə - ˌ t ē n, -t ə n
Function: noun
Etymology: French créatine, from Greek kreat-, kreas flesh ― more at RAW
Date: 1840
: a white crystalline nitrogenous substance C 4 H 9 N 3 O 2 found especially in the muscles of vertebrates either free or as phosphocreatine also : a synthetic usually hydrated form of creatine taken especially as a dietary supplement