irreversible C2 Topic:Law & Government US /ˌɪr.ɪˈvɝ.sə.bəl/ UK /ˌɪr.ɪˈvɜː.sə.bəl/ See IPA manual Freq #23096 Meanings 1 adj incapable of being reversed Irreversible momentum toward revolution. 2 adj Incapable of being reversed or turned about or back; incapable of being made to run backwards. An irreversible engine. 3 adj Incapable of being reversed, recalled, repealed, or annulled. An irreversible sentence or decree. 4 adj Incapable of being reversed to the original state without consumption of free energy and increase of entropy. Thesaurus Word family Derived forms irreversiblenessirreversiblythermoirreversible Related forms irreversibility Common collocations irreversible process Adjective + noun Etymology From ir- + reversible. Topics Law & Government External links Cambridge Dictionary Wiktionary Google Images # irreversible **Type:** Word **Level:** C2 **Part of speech:** adj **IPA (US):** /ˌɪr.ɪˈvɝ.sə.bəl/ **IPA (UK):** /ˌɪr.ɪˈvɜː.sə.bəl/ **Frequency rank:** 23096 ## Meanings 1. incapable of being reversed 2. Incapable of being reversed or turned about or back; incapable of being made to run backwards. 3. Incapable of being reversed, recalled, repealed, or annulled. 4. Incapable of being reversed to the original state without consumption of free energy and increase of entropy. ## Examples - Irreversible momentum toward revolution. - An irreversible engine. - An irreversible sentence or decree. ## Derived Forms - irreversibleness - irreversibly - thermoirreversible ## Related Forms - irreversibility ## Roots and Affixes - Affix: ir- - not ## Etymology From ir- + reversible. ## Topics - Law & Government markdown