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Definition of zooplankton
zooplankton
/ˌzoʊ.əˈplæŋk.tən/
zoo · plank · ton
Plural:zooplankton
•Adjective:zooplanktonic
zooplankton Lexical Profile
CEFR
C1
Grade
8
Tier
3
Usage
Rare
zooplankton Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
Plankton consisting of small, mostly microscopic animals (such as copepods, krill, and rotifers) and the immature larval stages of larger aquatic organisms that drift in oceans, seas, and bodies of fresh water, serving as a vital link in aquatic food webs.
Example
"Baleen whales filter massive quantities of water to feed on krill and other nutrient-rich zooplankton."
Synonyms
View all synonyms for zooplankton Antonyms
View all antonyms for zooplankton• Rhymes for zooplankton
Word Origin & Etymology
Coined in the late 19th century by combining the Ancient Greek prefix 'zoo-' (from 'zōion', meaning animal) with 'plankton' (derived from 'planktós', meaning wandering or drifting).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Zooplankton. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/zooplankton