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exotoxin

American  
[ek-soh-tok-sin] / ˌɛk soʊˈtɒk sɪn /

noun

Biochemistry.

  1. a soluble toxin excreted by a microorganism.

exotoxin British  
/ ˌɛksəʊˈtɒksɪn /

noun

  1. a toxin produced by a microorganism and secreted into the surrounding medium

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • exotoxic adjective

Etymology

Origin of exotoxin

First recorded in 1915–20; exo- + toxin

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.