共栄圏 きょうえいけん Meanings Noun co-prosperity sphere Kanji 共 together. Read as キョウ. 栄 flourish. Read as エイ. 圏 sphere. Read as ケン. Words containing 共栄圏 大東亜共栄圏 (だいとうあきょうえいけん) Greater East Asia Co-Prosperity Sphere Jinuma: Japanese Dictionary · Word lists