- the aggregate of animal or animallike organisms in plankton, as protozoans.
Origin of zooplankton
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the animal constituent of plankton, which consists mainly of small crustaceans and fish larvaeCompare phytoplankton
Word Origin and History for zooplankton
Online Etymology Dictionary, © 2010 Douglas Harper
- Plankton that consists of tiny animals, such as rotifers, copepods, and krill, and of microorganisms once classified as animals, such as dinoflagellates and other protozoans.
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