• synonyms


adjective Biochemistry.
  1. (of a biochemical reaction) requiring energy.
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Compare exergonic.

Origin of endergonic

1935–40; end- + Greek érgon work + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for endergonic


  1. (of a biochemical reaction) requiring energy to proceedCompare exergonic
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Word Origin

C20: from end (o-) + Greek ergon work + -ic
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

endergonic in Medicine


  1. Of or relating to a chemical reaction that absorbs energy and therefore cools its surroundings.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

endergonic in Science


  1. Relating to a chemical reaction that requires the absorption of energy. The production of sugars by plants during photosynthesis is an endergonic reaction, where sunlight provides the necessary energy. Compare exergonic.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.