We found 26 dictionaries that define the word zooplankton:

General (16 matching dictionaries)

1. zooplankton: Merriam-Webster
2. zooplankton: Oxford Learner's Dictionaries
3. zooplankton: American Heritage Dictionary of the English Language
4. zooplankton: Collins English Dictionary
5. zooplankton: Vocabulary.com
6. Zooplankton, zooplankton: Wordnik
7. zooplankton: Wiktionary
8. zooplankton: Webster's New World College Dictionary, 4th Ed.
9. zooplankton: The Wordsmyth English Dictionary-Thesaurus
10. zooplankton: Infoplease Dictionary
11. zooplankton: Dictionary.com
12. Zooplankton: Wikipedia, the Free Encyclopedia
13. zooplankton: Rhymezone
14. zooplankton: FreeDictionary.org
15. zooplankton: Mnemonic Dictionary
16. zooplankton: TheFreeDictionary.com

Computing (1 matching dictionary)

17. zooplankton: Encyclopedia

Medicine (2 matching dictionaries)

18. Medical Dictionary (No longer online)
19. online medical dictionary (No longer online)

Science (4 matching dictionaries)

20. Agricultural Thesaurus and Glossary (No longer online)
21. Environmental Terminology Discovery Service (No longer online)
22. zooplankton: Natural History Terms
23. Geography Dictionary (No longer online)

Slang (1 matching dictionary)

24. zooplankton: Urban Dictionary

Tech (2 matching dictionaries)

25. Lake and Water Word Glossary (No longer online)
26. Glossary of Water Resource Terms (No longer online)

(Note: See zooplanktonic as well.)

Definitions from Wiktionary (zooplankton) ▸ noun:  (zoology) Free-floating small protozoa, crustaceans (such as krill), etc. and the eggs and larvae from larger animals. Similar: zooplankter, ichthyoplankton, metazooplankton, meroplankton, holozooplankton, microzooplankton, microplankton, icthyoplankton, plankton, ichthyoplanktology, more... Opposite: phytoplankton, benthos, nekton Types: copepod, krill, daphnia, amphipod, euphausiid, ostracod, cyclops, more... Phrases: Gelatinous zooplankton, zooplankton eaten by whales, more... Adjectives: herbivorous, marine, crustacean, other, small, larger, gelatinous, freshwater, total, carnivorous, pelagic Colors:     blue,     green,     turquoise,     aqua,     teal, more... ▸ Words similar to zooplankton ▸ Usage examples for zooplankton ▸ Idioms related to zooplankton ▸ Wikipedia articles (New!) ▸ Popular adjectives describing zooplankton ▸ Words that often appear near zooplankton ▸ Rhymes of zooplankton ▸ Invented words related to zooplankton