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zooplankton

[zoh-uh-plangk-tuh n] /ˌzoʊ əˈplæŋk tən/
noun
1.
the aggregate of animal or animallike organisms in plankton, as protozoans.
Compare phytoplankton.
Origin of zooplankton
1900-1905
1900-05; zoo- + plankton
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for zooplankton

zooplankton

/ˌzəʊəˈplæŋktən/
noun
1.
the animal constituent of plankton, which consists mainly of small crustaceans and fish larvae Compare phytoplankton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for zooplankton
n.

1901, from comb. form of Greek zoion "animal" (see zoo) + plankton.

Online Etymology Dictionary, © 2010 Douglas Harper
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zooplankton in Science
zooplankton
  (zō'ə-plāngk'tən)   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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