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 (plo͞o′stən, -stŏn′)
Macroscopic organisms that float or swim on the surface of a body of water.

[Greek pleusis, sailing; see pleu- in Indo-European roots + (plank)ton.]

pleus·ton′ic (plo͞o-stŏn′ĭk) adj.


(ˈpluːstən; -stɒn)
(Biology) a mass of small organisms, esp algae, floating at the surface of shallow pools
[C20: from Greek pleusis sailing, from plein to sail; for form, compare plankton]


(ˈplu stən, -stɒn)

a buoyant mat of weeds, algae, and associated organisms that floats on or near the surface of a body of fresh water.
[1940–45; pleus- (< Greek pleûs(is) sailing]
pleus•ton′ic, adj.
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References in periodicals archive ?
benthic or floating vegetation) and halfbeak eggs would be completely lost if pleuston was discarded from ichthyoplankton samples.
The occurrence of a taxonomically diverse assemblage of insects in the pleuston of Cox Bay in the central Texas coast is documented.
However, apart from the possibility of initiating new evolutionary opportunities for freshwater species, these ecologically "foreign" members of the marine insect pleuston are important as a food source for surface feeders that normally consume marine pleuston.