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zy·mo·gen | \ ˈzī-mə-jən 
\
\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
nounzy·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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Time Traveler for zymogen
The first known use of zymogen was in 1877
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