WordReference Random House Unabridged Dictionary of American English © 2025
pleus•ton
(plo̅o̅′stən, -ston),USA pronunciation n. [Biol.]
pleus•ton•ic
(plo̅o̅ ston′ik),USA pronunciation adj.
- Plant Biology, Ecologya buoyant mat of weeds, algae, and associated organisms that floats on or near the surface of a lake, river, or other body of fresh water.
- Greek pleûs(is) sailing, or pleus- aorist stem of pleîn to sail, go by sea) + -ton, on the model of nekton, plankton
- 1940–45; pleus- (