from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Plankton that consists of animals, including the corals, rotifers, sea anemones, and jellyfish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Free-floating small protozoa, crustaceans (such as krill), etc. and the eggs and larvae from larger animals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. animal constituent of plankton; mainly small crustaceans and fish larvae
Sorry, no etymologies found.