exothermicity

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noun

The quality or state of being exothermic.

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Meanings

nounexothermicity (usually uncountable, plural exothermicities)

plural exothermicities

  1. uncountableusuallychemistryThe quality or state of being exothermic.

    The second step is substantially exothermic and fast; the overall exothermicity ensures that there is no tendency for the reaction to reverse.

    2004, Richard A. Jackson, Mechanisms in Organic Reactions, page 137
  2. countableusuallyThe release of heat during an exothermic reaction.

    Because of the unusual methylene substitution selectivities, the exothermicities of the different methylene substitution reactions were calculated from estimated heats of formation of the reactants and heats of formation of the products.

    1995, Raymond E. March, Practical Aspects of Ion Trap Mass Spectrometry, page 378

Origin

From exothermic + -ity.

Full word history & related roots →
Cite this entry
APA

exothermicity. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/exothermicity

MLA

“exothermicity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/exothermicity. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “exothermicity,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/exothermicity.

Source: exothermicity on Wiktionary, CC BY-SA 4.0.