phytoplankton

noun

phy·​to·​plank·​ton ˌfī-tō-ˈplaŋ(k)-tən How to pronounce phytoplankton (audio)
-ˌtän
plural phytoplankton also phytoplanktons
: minute aquatic photosynthetic organisms (such as dinoflagellates, diatoms, and cyanobacteria) : photosynthetic plankton of freshwater or marine environments
Twenty to 40 different species of phytoplankton … can coexist within a single cubic centimeter of water, all vying just for light and a handful of nutrients.O. Baker
Phytoplankton—myriad small, mostly unicellular algae and bacteria that occupy the surface waters of seas and lakes—dominate aquatic primary production, and over time they have radically altered Earth's atmosphere.Robert Riding
Phytoplankton form the foundation of marine food chains, and their seasonal blooms are responsible for more than half the photosynthesis, and the resulting production of oxygen, that occurs on Earth.Robin George Andrews
Antarctic krill are thumb-sized crustaceans that feast on drifting phytoplanktonUsha Lee McFarling
compare zooplankton
phytoplanktonic adjective
phytoplanktonic species
a phytoplanktonic bloom

Examples of phytoplankton in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Under its Genomics at Sea Program, in partnership with the Scripps Institution of Oceanography and the J. Craig Venter Institute, Viking hosts researchers to analyze samples of phytoplankton from the ships’ home waters in the Great Lakes, Antarctica, and, beginning in 2025, the Arctic. Cnt Editors, Condé Nast Traveler, 7 Nov. 2024 From carbon dioxide removal machines, which absorb CO2 from the air, to ‘ocean fertilization’ ships that release iron into the water to stimulate the growth of carbon-sucking phytoplankton, novel climate solutions are gaining more and more traction. Maeve Campbell, Forbes, 31 Oct. 2024 Without light, phytoplankton and other organisms are unable to perform photosynthesis. Devika Rao, theweek, 8 Oct. 2024 In an attempt to address this, the USGS researchers corrected for these kinds of factors when developing the algorithm, although their model becomes less accurate when unusual components are present—such as a bloom of a specific phytoplankton species or a rare kind of dark volcanic seafloor. Newsweek, 4 Nov. 2024 See all Example Sentences for phytoplankton 

Word History

Etymology

phyto- + plankton

First Known Use

1897, in the meaning defined above

Time Traveler
The first known use of phytoplankton was in 1897

Dictionary Entries Near phytoplankton

Cite this Entry

“Phytoplankton.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phytoplankton. Accessed 3 Dec. 2024.

Kids Definition

phytoplankton

noun
phy·​to·​plank·​ton ˌfī-tō-ˈplaŋ(k)-tən How to pronounce phytoplankton (audio)
-ˌtän
: plankton that is composed of plants

More from Merriam-Webster on phytoplankton

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