In a manner that involves a change in temperature or volume without any exchange of heat with the surroundings.
From adiabatic (Greek a- 'not' + diabainein 'to pass through') + -ally (adverbial suffix). Creates an adverb describing how adiabatic processes occur.
When meteorologists describe how clouds form adiabatically, they're explaining why the temperature drops enough for water vapor to condense—the rising air does work to expand, cooling itself without outside heat loss!
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