What is the meaning of pond scum?

noun

  • Free-floating freshwater green algae. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). pond scum. Retrieved September 20, 2026, from http://smartdefine.org/pond_scum/definitions/1194680
ChicagoWordNet. 2010. "pond scum" http://smartdefine.org/pond_scum/definitions/1194680 (accessed September 20, 2026).
HarvardWordNet 2010, pond scum, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/pond_scum/definitions/1194680>.
MLAWordNet. "pond scum" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/pond_scum/definitions/1194680>