English Noun set operation (plural set operations) (set theory) A mathematical operation that returns a set taking one or more sets as input. Synonyms set-theoretic operation Translations mathematical operation on sets Czech: množinová operace f Japanese: 集合演算 (しゅうごうえんざん, shūgō enzan) Korean: 집합 연산(集合演算) (jiphap yeonsan)