sui seikonchū
1. aquatic insect
Noun
#136979
1. aquatic insect
1. comet
1. insect; bug
1. Mercury (planet)
1. Cometary; Of a comet
1. If/when a comet
1. Probably a comet.; It will likely be a comet.
1. With a comet; By comet
1. It is not a comet.
1. if/when comet