an organism that spends only a part of its life cycle as a member of the plankton community (e.g., the barnacle or starfish, in which only the larval stages are planktonic)
Origin of meroplankton; from Classical Greek meros, part (see merit) + plankton
The collection of organisms in the plankton that spend only part of their life cycle, usually the larval or egg stage, drifting freely in the water.
- (biology) Any organism that spends part of its life-cycle (especially the larval stage) as plankton
mero- +"Ž plankton