irreversible

Word parts

ir- + reversible

Pronunciation

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

• Audio (UK)

  (file)

Adjective

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

• reversible