Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

zymogen

play
noun zy·mo·gen \ˈzī-mə-jən\

Medical Definition of zymogen

  1. :  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




Learn More about zymogen


Seen and Heard

What made you want to look up zymogen? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to work hard

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin oily prompt angry
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ