adiabatic

== English == === Etymology === 19th-century coinage (introduced by W. J. M. Rankine in the 1860s) based on Ancient Greek ἀδιάβατος (adiábatos, “impassable”), used of terrain (rivers, forests) by Xenophon, from ἀ- (a-, “not”) + διά (diá, “through”) + βατός (batós, “passable”), from βαίνω (baínō, “to go”). === Pronunciation === IPA(key): /ˌeɪ.dɪəˈbæt.ɪk/, /ˌæd.ɪəˈbæt.ɪk/, /ˌeɪ.daɪ.əˈbæt.ɪk/ Rhymes: -ætɪk === Adjective === adiabatic (not comparable) (physics, thermodynamics, of a process) Without gain or loss of heat (and thus with no change in entropy, in the quasistatic approximation). Antonym: diabatic (physics, quantum mechanics, of a process) Involving the slow change of the Hamiltonian of a system from its initial value to a final value. Antonym: nonadiabatic ==== Derived terms ==== ==== Related terms ==== diabatic ==== Translations ==== === Noun === adiabatic (plural adiabatics) An adiabatic curve or graph === Further reading === adiabatic on Wikipedia.Wikipedia == Romanian == === Etymology === Borrowed from French adiabatique. === Adjective === adiabatic m or n (feminine singular adiabatică, masculine plural adiabatici, feminine/neuter plural adiabatice) adiabatic ==== Declension ====