adi·a·bat·ic /ˌædiəˈbætɪk, ˌeˌdaɪə-/
(a.)絕熱的,隔熱的
Ad·i·a·bat·ic a. Physics Not giving out or receiving heat. -- Ad*i*a*bat*ic*al*ly, adv.
Adiabatic line or curve, a curve exhibiting the variations of pressure and volume of a fluid when it expands without either receiving or giving out heat.
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adiabatic
adj : occurring without loss or gain of heat; "adiabatic
expansion" [ant: diabatic]