adiabat

noun

adi·​a·​bat

ˈa-dē-ə-ˌbat

variants or less commonly adiabatic

ˌa-dē-ə-ˈba-tik 

ˌā-ˌdī-ə-

plural -s

: a curve or line plotted using coordinates selected to represent the pressure and volume or the temperature and entropy of matter during an adiabatic process

Word History

Etymology

adiabat, back-formation from adiabatic, adjective; adiabatic, from adiabatic, adjective

First Known Use

1872, in the meaning defined above

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