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coffee machine
coffee mill
coffee morning
coffee shop
coffee table
coffee-table book
coffeecake
coffeehouse
coffeemaker
coffeepot
coffer
cofferdam
coffin
coffin birth
coffin bone
coffin corner
coffin nail
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cofactor
co·fac·tor [ kō fáktər ] (plural co·fac·tors)


noun 
Definition:
 
enzyme partner: a substance that acts with and is essential to the activity of an enzyme, e.g. a coenzyme or metal ion
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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