coenzyme

[koh-en-zahym]
noun Biochemistry.
a molecule that provides the transfer site for biochemical reactions catalyzed by an enzyme.

Origin:
1905–10; < German Ko-enzym; see co-, enzyme

coenzymatic [koh-en-zahy-mat-ik, -zi-] , adjective
coenzymatically, adverb
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World English Dictionary
coenzyme (kəʊˈɛnzaɪm)
 
n
biochem See also apoenzyme a nonprotein organic molecule that forms a complex with certain enzymes and is essential for their activity

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

coenzyme co·en·zyme (kō-ěn'zīm')
n.
A thermostable nonprotein organic substance that usually contains a vitamin or mineral and combines with a specific apoenzyme to form an active enzyme system.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
coenzyme   (kō-ěn'zīm')  Pronunciation Key 
A nonprotein organic substance that usually contains a vitamin or mineral and combines with a specific protein, called an apoenzyme, to form an active enzyme system.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for coenzymes
Coenzymes molecules are often vitamins or are made from vitamins.
Coenzymes are therefore continuously recycled as part of metabolism.
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