irreversible

From Wiktionary

Word parts[change]

ir- + reversible

Pronunciation[change]

  • (UK) IPA (key): /ˌɪr.ɪˈvɜː.sə.bəl/
  • (US) IPA (key): /ˌɪr.ɪˈvɝ.sə.bəl/
  • (file)

Adjective[change]

Positive
irreversible

Comparative
none

Superlative
none

  1. If something is irreversible, you cannot reverse it.
  2. (physics) If something is irreversible, it cannot return to how it once was.
  3. (thermodynamics) If something is irreversible, it cannot return how it once was without using free energy or increasing entropy.

Antonyms[change]