A process where temperature changes occur in a 'system', without heat being supplied to, or lost from that system. In meteorology, used in connection with changes involving air parcels moving vertically in the atmosphere. [ If heat exchange is involved, the process is non-adiabatic (or diabatic)].
Meaning of ADIABATIC in English
Weather and meteorology English vocabulary. Английский словарь погоды и метеорологии . 2012