Word.ws English Dictionary

Plural of equilibrium

regular plural

The plural of equilibrium is equilibriums or equilibria.

Forms of equilibrium

Singularequilibrium /ɛkwɪˈlɪbɹɪəm/
Pluralequilibriums
equilibria /ɛkwɪˈlɪbɹɪə/
Countablecountable

Equilibriums and equilibria in a sentence

  • Coral bleaching threatens to disrupt the population equilibria of the reef’s fishes.From the entry fishes
  • The attempts to rule out multiple equilibria basically state that the government will blow up the economy should accelerating inflation or deflation occur.2011, Cochrane, John H., “Determinacy and Identification with Taylor Rules”, in Journal of Political Economy, volume 119, number 3, page 606. From the entry blow up
  • Fourthly, when all equilibria are unstable and complex endogenous fluctuations arise, the LAW policy reduces the amplitude of fluctuations but at the expense of larger average deviations from the targets.2024, Anufriev, Lamantia, Radi, Tichy, “Leaning against the wind in the New Keynesian model with heterogeneous expectations”, in Journal…. From the entry fourthly
  • At the same time, because of differences in the chemistry of the daughter and parent elements involved in such secular equilibria, this parent:daughter ratio may not be equal to 1.2020, David J. Burdige, Geochemistry of Marine Sediments, Princeton University Press, page 43. From the entry secular equilibrium

Meaning of equilibrium

  1. noun The condition of a system in which competing influences are balanced, resulting in no net change.
  2. noun Mental balance.
  3. noun The state of a reaction in which the rates of the forward and reverse reactions are the same.

Full definition of equilibrium

Questions about the plural of equilibrium

What is the plural of equilibrium?
The plural of equilibrium is equilibriums or equilibria.
Which is correct, equilibriums or equilibria?
Both are used. equilibria is the more common of the two in English writing.
Is equilibrium countable?
Equilibrium is a countable noun.

Source and license

Adapted from Wiktionary: equilibrium (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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