1Floating or drifting in air or liquid; suspension. Often used in scientific or technical contexts (e.g., suspended particles).
空中に浮遊する微粒子が大気汚染の原因の一つだ。
Particles floating in the air are one cause of air pollution.
海面に浮遊するプランクトンを顕微鏡で観察した。
I observed plankton floating on the sea surface under a microscope.
工場の排水に浮遊物が多いと環境基準を満たさない。
If factory wastewater contains many suspended solids, it won't meet environmental standards.
2Wandering or roaming about (archaic/literary); to drift without settling in one place.
彼は若い頃、各地を浮遊して暮らしたという伝説がある。
There's a legend that in his youth he wandered around and lived in many places.