pond scum


Also found in: Thesaurus, Medical, Idioms, Encyclopedia, Wikipedia.

pond scum

n.
A usually greenish film on the surface of stagnant water, consisting of a mass of freshwater algae.

pond scum

n
(Biology) a greenish layer floating on the surface of stagnant waters, consisting of various freshwater algae

pond′ scum`


n.
a mass of free-floating freshwater algae that forms a green scum on water.
[1885–90]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pond scum - free-floating freshwater green algae
chlorophyte, green algae - algae that are clear green in color; often growing on wet ricks or damp wood or the surface of stagnant water
family Zygnemataceae, Zygnemataceae - pond scums: common freshwater algae forming green slimy masses
References in periodicals archive ?
You're lower than the pond scum, so I'm just gonna say this once," Neeson said in the recording, referring to his character in "Taken.
Now and again, someone quits the team by writing a cancel-my-subscription letter and damning NCR as pond scum, with me in the subaquatic waters below.
Formerly called blue-green algae and often called pond scum, cyanobacteria are one of the best prokaryotic phyla in which to study bioenergetics and stress biology, because of their cosmopolitan occurrence, archaic origin, and relatively simple bacterial architecture with a physiology ancestral to higher plants.
It appeared to be a photomicrograph of some reddish bit of pond scum in a lovely, thin blue membrane, surrounded by a few dozen much smaller microorganisms.
You people, on the other hand, are pond scum and I show my contempt for you by wearing gigantic curlers.
This system will convert pond scum into biofuel, ultimately making the campus, and possibly the entire community, more self-sustainable.
Cyanobacteria have a multi-layer, burrito-like, protective set of outer membranes that help the bacteria thrive in even harsh surroundings, creating the pond scum often found in backyard swimming pools.
By Tiffany HsuTo many, algae is little more than pond scum, a nuisance to swimmers and a frustration to boaters.
algae industry will be in Washington this week, urging lawmakers to consider tax breaks and other incentives to help turn pond scum into an economically viable fuel for commercial aviation.
We buy the newspapers; watch the TV programmes, and worse yet buy the products and services to associate ourselves with people barely on the next rung of the evolutionary ladder from pond scum.