exergonicadj.

Brit.

/ˌɛksəːˈɡɒnɪk/, U.S.

/ˌɛksˌərˈɡɑnɪk/

Origin: A borrowing from Greek, combined with English elements. Etymons: exo- prefix, Greek ἔργον , -ic suffix.

Etymology: < exo- prefix + ancient Greek ἔργον work (see erg n.¹) + -ic suffix. Compare endergonic adj.

Chemistry and Biochemistry.

Of a chemical or metabolic process: accompanied by the release of energy, the products having a lower free energy than the reactants. Contrasted with endergonic. Cf. exothermic adj.

ΚΠ

1940 C. D. Coryell in Science 25 Oct. 380/2 We therefore propose that the term ‘exergonic’ be applied to reactions which can produce work, and ‘endergonic’ be applied to those on which work must be expended to cause the reaction to occur.

1974 V. B. Mountcastle Med. Physiol. (ed. 13) I. i. iii. 101/2 Because nearly all chemical processes occurring in muscle at rest are exergonic, resting muscle releases heat to its environment.

1992 C. A. Smith & E. J. Wood Biosynthesis ii. 31 The overall initial reaction, from the carboxylation of ribulose 1,5-bisphosphate to the generation of the two 3-phosphoglycerate molecules, is highly exergonic.

2008 N. Draper & C. Hodgson Adventure Sport Physiol. ii. 36/2 The chemical reactions that take place in the body are of two types: exergonic i.e. energy-liberating or endergonic i.e. require energy to drive them.

This is a new entry (OED Third Edition, June 2018; most recently modified version published online March 2022).

单词	exergonic
释义	exergonicadj. Brit. /ˌɛksəːˈɡɒnɪk/, U.S. /ˌɛksˌərˈɡɑnɪk/ Origin: A borrowing from Greek, combined with English elements. Etymons: exo- prefix, Greek ἔργον , -ic suffix. Etymology: < exo- prefix + ancient Greek ἔργον work (see erg n.¹) + -ic suffix. Compare endergonic adj. Chemistry and Biochemistry. Of a chemical or metabolic process: accompanied by the release of energy, the products having a lower free energy than the reactants. Contrasted with endergonic. Cf. exothermic adj. ΚΠ 1940 C. D. Coryell in Science 25 Oct. 380/2 We therefore propose that the term ‘exergonic’ be applied to reactions which can produce work, and ‘endergonic’ be applied to those on which work must be expended to cause the reaction to occur. 1974 V. B. Mountcastle Med. Physiol. (ed. 13) I. i. iii. 101/2 Because nearly all chemical processes occurring in muscle at rest are exergonic, resting muscle releases heat to its environment. 1992 C. A. Smith & E. J. Wood Biosynthesis ii. 31 The overall initial reaction, from the carboxylation of ribulose 1,5-bisphosphate to the generation of the two 3-phosphoglycerate molecules, is highly exergonic. 2008 N. Draper & C. Hodgson Adventure Sport Physiol. ii. 36/2 The chemical reactions that take place in the body are of two types: exergonic i.e. energy-liberating or endergonic i.e. require energy to drive them. This is a new entry (OED Third Edition, June 2018; most recently modified version published online March 2022). < adj.1940
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