adiabat
/ˈeɪdʌɪəˌbat/ /ˈadɪəˌbat/Physics
noun
An adiabatic curve or line; = adiabatic.
Origin
Late 19th century. From adiabat-, after German Adiabate (noun) adiabatic curve; compare adiabat (adjective) adiabatic. Compare also French adiabate, noun.