superadiabatic Syllabification: (su·per·ad·i·a·bat·ic)Pronunciation: /ˌso͞opərˌādīəˈbatik, -ˌadēə-/Definition of superadiabatic adjective chiefly Meteorology relating to or denoting a temperature gradient which is steeper than that occurring in adiabatic conditions. superadiabatic in other Oxford dictionaries Definition of superadiabatic in the British & World English dictionary