an organism that is planktonic for only a part of its life cycle (e.g., the barnacle or starfish, in which only the larval stages are planktonic)
Origin of meroplanktonfrom 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