[ploo-stuh n, -ston]
a buoyant mat of weeds, algae, and associated organisms that floats on or near the surface of a lake, river, or other body of fresh water.
Origin of pleuston
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a mass of small organisms, esp algae, floating at the surface of shallow pools
Word Origin for pleuston
C20: from Greek pleusis sailing, from plein to sail; for form, compare plankton
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