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Requiring energy: an endergonic chemical reaction.

[end(o)- + Greek ergon, work; see werg- in Indo-European roots + -ic.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) (of a biochemical reaction) requiring energy to proceed. Compare exergonic
[C20: from end(o-) + Greek ergon work + -ic]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɛn dərˈgɒn ɪk)

(of a biochemical reaction) requiring energy. Compare exergonic.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.endergonic - (biochemistry) of a process accompanied by or requiring the absorption of energy; the products of the process are of greater free energy than the reactants; "photosynthesis is an endergonic process"
biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry
exergonic - (biochemistry) of a process accompanied by the release of energy; "diffusion is an exergonic process"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Positive values characterize a non-spontaneous endergonic reaction, that is, one that requires an external agent supplying energy (Goneli et al., 2010).
When proximity of matter is increased, as in the condensation of molecules onto grains, endergonic or exergonic reactions can occur and will increase organic molecular complexity with compounds of dozens or even hundreds of atoms.
In this case, it should be noted that fat synthesis is an endergonic pathway (Nelson & Cox, 2014), so eventually becomes an energy drain that competes with the growth itself, reason that this may have led to the reduction in area due to hepatocyte reduction of energy reserves of lipids and glycogen in liver cells.
The biodiesel oxidation reaction showed higher activation energy, higher enthalpy of activated complex formation, and less negative entropy, or rather, it is a more endergonic process than that reported in literature for similar biodiesel samples (Borsato et al., 2014; Maia et al., 2011).