[ ˌeɪdʌɪə'batɪk , ˌadɪə- ]
■ adjective Physics
1》 denoting a process or condition in which heat does not enter or leave the system concerned.
2》 impassable to heat.
Derivatives
~ally adverb
Origin
C19: from Gk adiabatos 'impassable', from a- 'not' + dia 'through' + batos 'passable'.