大作戦 だいさくせん Meanings Noun large-scale operation; large-scale campaign; major mission Kanji 大 big. Read as ダイ. 作 make. Read as サク. 戦 war. Read as セン. Words containing 大作戦 宇宙大作戦 (うちゅうだいさくせん) Star Trek (1966 American science-fiction television series) Jinuma: Japanese Dictionary · Word lists