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Definition of zymogen
: an inactive protein precursor of an enzyme secreted by living cells and converted (as by a kinase or an acid) into an active form —called also proenzyme
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zymogen
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noun
zy·mo·gen
\ˈzī-mə-jən\
Medical Definition of zymogen
: an inactive protein precursor of an enzyme secreted by living cells and converted (as by a kinase or an acid) into an active form—called also proenzyme
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Britannica.com: Encyclopedia article about zymogen
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