picoplankton

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noun

The plankton composed of cells between 0.2 and 2 micrometers.

Scrabble 22
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Meanings

nounpicoplankton (uncountable)
  1. uncountableThe plankton composed of cells between 0.2 and 2 micrometers.

    He and P. W. Johnson confirmed the recent discovery of a species of photosynthetic picoplankton, using electron microscopes to perceive fluorescence produced by the chlorophyll of the organisms.

    2007 January 9, Douglas Martin, “John Sieburth, 79, Who Studied Various Types of Marine Life, Dies”, in New York Times

Origin

From pico- + plankton.

Full word history & related roots →
Cite this entry
APA

picoplankton. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/picoplankton

MLA

“picoplankton.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/picoplankton. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “picoplankton,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/picoplankton.

Source: picoplankton on Wiktionary, CC BY-SA 4.0.