出典:Wiktionary
Borrowed from Medieval Latin dēbellātiō (“total defeat”), from dēbellō (“conquer, subjugate”).
debellation (uncountable)
(international law): In contrast to an ordinary surrender or defeat, debellation is a condition in which a defeat is so total that the vanquished state no longer functions as an institution and no further resistance is possible, and the state may therefore be said to have become legally extinct.