adiabatic


adi·a·bat·ic

adjective \ˌa-dē-ə-ˈba-tik, ˌā-ˌdī-ə-\

Definition of ADIABATIC

:  occurring without loss or gain of heat <adiabatic expansion of a gas>
adi·a·bat·i·cal·ly \-ti-k(ə-)lē\ adverb

Origin of ADIABATIC

Greek adiabatos impassable, from a- + diabatos passable, from diabainein to go across, from dia- + bainein to go — more at come
First Known Use: 1859

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