[ ek-ser-gon-ik ]
/ ˌɛk sərˈgɒn ɪk /
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adjective Biochemistry.

(of a biochemical reaction) liberating energy.



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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Compare endergonic.

Origin of exergonic

1935–40; ex-3 + Greek érgonwork + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for exergonic

/ (ˌɛksəˈɡɒnɪk) /


(of a biochemical reaction) producing energy and therefore occurring spontaneouslyCompare endergonic

Word Origin for exergonic

C20: from ex (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

Medical definitions for exergonic

[ ĕk′sər-gŏnĭk ]


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

Scientific definitions for exergonic

[ ĕk′sər-gŏnĭk ]

Relating to a chemical reaction that releases energy. The breakdown of sugars by cellular metabolism is an exergonic reaction that releases energy used to drive endergonic reactions. Compare endergonic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.