回遊 かいゆう Also written 回游, 洄游 Meanings Noun, する verb, Intransitive excursion; round trip seasonal migration (of fish, etc.) Kanji 回 times. Read as カイ. 遊 play. Read as ユウ. Words containing 回遊 回遊性 (かいゆうせい) navigability 回遊船 (かいゆうせん) excursion boat 回遊魚 (かいゆうぎょ) migratory fish And 5 more. Jinuma: Japanese Dictionary · Word lists