irreversible

adjective
/ˌɪr.ɪˈvɜː.sə.bəl/

incapable of being reversed or turned about or back; incapable of being made to run backwards.

Example

“an irreversible engine”

Other meanings

Incapable of being reversed, recalled, repealed, or annulled.
“an irreversible sentence or decree”
Incapable of being reversed to the original state without consumption of free energy and increase of entropy.

Related words

irreversibleness
irreversibly
thermoirreversible

Example sentences

“Puberty causes irreversible physical changes.”
Tatoeba · shekitten · CC0

Where this comes from

This definition is adapted from “irreversible” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.