n. A compound, C4H9N3O2, that is found in the muscle tissue of vertebrates mainly in the form of phosphocreatine and that is involved in storing and supplying energy for muscle contraction. [French créatine : from Greek kreas, kreat-, flesh; see kreuə- in the Appendix of Indo-European roots.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.