na-adjective, noun which may take the genitive case particle 'no', noun
Used in scientific, technical, and formal contexts to describe processes, changes, or decisions that cannot be undone. Antonym: 可逆 (reversible).
Antonyms: 可逆
この化学反応は不可逆です。
This chemical reaction is irreversible.
時間の流
The flow of time is irreversible.