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[kree-uh-teen, -tin] /ˈkri əˌtin, -tɪn/
noun, Biochemistry
an amino acid, C 4 H 9 N 3 O 2 , that is a constituent of the muscles of vertebrates and is phosphorylated to store energy used for muscular contraction.
Origin of creatine
1830-40; creat- (< Greek kreat-, stem of kréas) flesh + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for creatine


/ˈkriːəˌtiːn; -tɪn/
an important metabolite involved in many biochemical reactions and present in many types of living cells
Word Origin
C19: creat- from Greek kreas flesh + -ine²
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
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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
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creatine in Medicine

creatine cre·a·tine (krē'ə-tēn', -tĭn) or cre·a·tin (-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.
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creatine in Science
  (krē'ə-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 © 2002. Published by Houghton Mifflin. All rights reserved.
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