A change from one thermodyanamic state to another along a path which cannot be constructed by a series of infinitesimal steps, each of which is reversible. A typical irreversible change is a spontaneous one in nature; for example, rapid expansion of a gas.
IRREVERSIBLE CHANGE
Meaning of IRREVERSIBLE CHANGE in English
Weather and meteorology English vocabulary. Английский словарь погоды и метеорологии . 2012