exotoxin Hear it!

exotoxin definition

exo·toxin (eks′ō täk′sin)

noun

Bacteriology a protein toxin, as tetanus or diphtheria, secreted by bacteria

Etymology: exo- + toxin

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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