Standard Lemma guide

irreversibility

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The quality of being irreversible; the lack of an ability to be reversed.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Examples

  • 1806, Samuel Barnard, The Essence, Spirituality, and Glorious Issue, of the Religion of Christ Jesus, to All God's Chosen, W. Nicholson, page 279, Now if the irreversibility of God's gifts to his people, be considered, what joy for those who feel within a wicked heart.
  • 1911, Power, Hill Pub. Co., page 171, But because of irreversibilities in the engine, all of this theoretical conversion is not realized and some internal energy remains in the steam exhausting from the engine.
  • 2007, Mark Currie, About Time: Narrative, Fiction and the Philosophy of Time, Edinburgh University Press, →ISBN, page 103, Paul Horwich, for example, in Asymmetries in Time, includes the laws of thermodynamics in a list of ten temporally asymmetric phenomena which operate in our conceptual system. Seen in this way, where the irreversibility of time is inseparable from rationality itself, the argument against backwards time tends to be expressed in terms of consequences, or the fear that time reversal is paramount to irrationality.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the quality of being irreversible (once done it cannot be changed)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: reversibility

Broader terms: changelessness, unchangeability, unchangeableness, unchangingness

History

Etymology

From irreversible + -ity or ir- + reversibility.

Across languages

Translations

18 source translations are retained for this English entry.

  • Armenian: անշրջելիություն (anšrǰeliutʻyun) — The quality of being irreversible
  • Bulgarian: необратимост (neobratimost) — The quality of being irreversible
  • Dutch: onomkeerbaarheid — The quality of being irreversible
  • Finnish: peruuttamattomuus — The quality of being irreversible
  • Finnish: pysyvyys — The quality of being irreversible
  • Finnish: kääntämättömyys — The quality of being irreversible
  • French: irréversibilité — The quality of being irreversible
  • Georgian: შეუბრუნებლობა (šeubrunebloba) — The quality of being irreversible
  • Georgian: შეუქცევადობა (šeukcevadoba) — The quality of being irreversible
  • Georgian: არაუკუქცევადობა (arauḳukcevadoba) — The quality of being irreversible
  • German: Unabänderlichkeit — The quality of being irreversible
  • German: Unumkehrbarkeit — The quality of being irreversible
  • German: Unwiderruflichkeit — The quality of being irreversible
  • German: Irreversibilität — The quality of being irreversible
  • Greek: αμετακλητότητα (ametaklitótita) — The quality of being irreversible
  • Italian: irreversibilità — The quality of being irreversible
  • Polish: nieodwracalność — The quality of being irreversible
  • Russian: необрати́мость (neobratímostʹ) — The quality of being irreversible