[ kree-uh-teen, -tin ]
/ ˈkri əˌtin, -tɪn /

noun Biochemistry.

an amino acid, C4H9N3O2, that is a constituent of the muscles of vertebrates and is phosphorylated to store energy used for muscular contraction.

Nearby words

  1. crease-resistant,
  2. creasy,
  3. create,
  4. create a scene,
  5. creatinase,
  6. creatine kinase,
  7. creatine phosphate,
  8. creatinemia,
  9. creatininase,
  10. creatinine

Origin of creatine

1830–40; creat- (< Greek kreat-, stem of kréas) flesh + -ine2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for creatine

British Dictionary definitions for creatine


creatin (ˈkriːətɪn)

/ (ˈkriːəˌtiːn, -tɪn) /


an important metabolite involved in many biochemical reactions and present in many types of living cells

Word Origin for creatine

C19: creat- from Greek kreas flesh + -ine ²

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for creatine



1834, from French creatine, from Greek kreas "flesh, meat" (see raw) + chemical suffix -ine (2). Organic base discovered by French physicist Michel-Eugène Chevreul (1786-1889) in the juice of flesh and named by him.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for creatine


[ krēə-tēn′, -tĭn ]


A nitrogenous organic acid that is found in the muscle tissue of vertebrates mainly in the form of phosphocreatine and supplies energy for muscle contraction.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for creatine


[ krēə-tēn′, -tĭn ]

A nitrogenous organic acid that is found in the muscle tissue of vertebrates, mainly combined with phosphorus, and that supplies energy for muscle contraction. Chemical formula: C4H9N3O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.