noun
irreversible change
Technical term used in physics, chemistry, and other sciences to describe a process that cannot be reversed. Contrasts with 可逆変化 (reversible change).
See also: 可逆変化
熱力学では、不可逆変化はエントロピーが増大する過程として扱われる。
In thermodynamics, irreversible change is treated as a process in which entropy increases.
This chemical reaction is an irreversible change and does not return to the original substances.