回遊、回游、洄游
かいゆう
kaiyuu
JMdict entry #1199790
- noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb excursion; round trip
- noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb seasonal migration (of fish, etc.)