from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A nitrogenous organic acid, C4H9N3O2, that is found in the muscle tissue of vertebrates mainly in the form of phosphocreatine and supplies energy for muscle contraction.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An amino acid 2-(carbamimidoyl-methyl- amino)acetic acid which naturally occurs in vertebrates and helps to supply energy to muscle and nerve cells
from The Century Dictionary and Cyclopedia
- n. A neutral crystallizable organic substance (C4H9N3O2) obtained from muscular tissue. See extract under creatinine. Also spelled creatin, kreatin.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. 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
French créatine : from Greek kreas, kreat-, flesh.(American Heritage® Dictionary of the English Language, Fourth Edition)