plankton

[ plangk-tuhn ]
/ ˈplæŋk tən /

noun

the aggregate of passively floating, drifting, or somewhat motile organisms occurring in a body of water, primarily comprising microscopic algae and protozoa.

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Origin of plankton

1890–95; <German, special use of neuter of Greek planktós drifting, equivalent to plang-, variant stem of plázesthai to drift, roam, wander + -tos verbid suffix

OTHER WORDS FROM plankton

plank·ton·ic [plangk-ton-ik], /plæŋkˈtɒn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for plankton

British Dictionary definitions for plankton

plankton
/ (ˈplæŋktən) /

noun

the organisms inhabiting the surface layer of a sea or lake, consisting of small drifting plants and animals, such as diatomsCompare nekton

Derived forms of plankton

planktonic (plæŋkˈtɒnɪk), adjective

Word Origin for plankton

C19: via German from Greek planktos wandering, from plazesthai to roam
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

Scientific definitions for plankton

plankton
[ plăngktən ]

Small organisms that float or drift in great numbers in bodies of salt or fresh water. Plankton is a primary food source for many animals, and consists of bacteria, protozoans, certain algae, cnidarians, tiny crustaceans such as copepods, and many other organisms. Compare benthos nekton.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.