endergonic reaction (endoergic reaction) 

https://doi.org/10.1351/goldbook.E02091
This is usually taken to be a reaction for which the overall standard Gibbs energy change ΔG⚬ is positive. Some workers use this term with respect to a positive value of ΔH⚬ at the absolute zero of temperature.
Source:
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 164 [Terms] [Paper]
Citation: 'endergonic reaction' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.E02091 RIS BibTex EndNote
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Last revised: February 24, 2014