'Creatin' definitions:
Definition of 'creatin'
From: WordNet
noun
An amino acid that does not occur in proteins but is found in the muscle tissue of vertebrates both in the free form and as phosphocreatine; supplies energy for muscle contraction [syn: creatine, creatin]
Definition of 'Creatin'
From: GCIDE
- Creatin \Cre"a*tin\ (kr?"?-t?n), n. [Gr. ??? flesh.] (Physiol. Chem.) A white, crystalline, nitrogenous substance found abundantly in muscle tissue. [Written also kreatine.] [1913 Webster]