scum


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scum

1. the greenish film of algae and similar vegetation surface of a stagnant pond
2. the skin of oxides or impurities on the surface of a molten metal

scum

[skəm]
(materials)
A film of impurities that rises to or is formed on the surface of a liquid.
A slimy film formed on the surface of a solid object.

scum, scumming

1. A surface deposit sometimes formed on clay bricks; caused either by soluble salts in the clay which migrate to the surface as moisture escapes during drying (drier scum) or by the formation of deposits during kiln firing (kiln scum).
2. A mass of organic matter which floats on the surface of sewage.
References in periodicals archive ?
X-ray powder diffraction analysis of sugar scum powder and optimal adsorbent was carried out in Reminex Managem laboratory in Morocco to identify the various phases present in those materials.
The accumulation of total solids in septic tanks in particular was assessed, including both sludge and scum accumulation.
Solanas's comfort with irony and contradiction appears throughout the SCUM Manifesto.
"We found that this unpleasant scum forms when the tea is brewed in hard water, which has both calcium ions and bicarbonate ions in it," Spiro says.
The importance of anaerobic digester shape in minimizing upsets and operational problems such as scum and grit accumulation and reducing the energy required to maintain uniform conditions is just being realized in the U.S.
Here are just a few of the comments about the attack left on our Facebook page: Carmelo Infantino said: "When are we going to start giving tougher consequences for scum that do dumb stupid stuff like this?
Jail the scum who are carrying knifes THE legal system of this country does not seem to listen to what the people say or want in how to deal with the horrific issue of cowardly scum who use knives.
On the day, my MSP, Bruce Crawford, asked for and took a photograph featuring myself and others which our delightful MP Stephen Kerr has chosen to place on social media alongside a picture of a banner with the words 'Tory Scum Out' with which no one I am aware of is happy.
THE BBC said an "unfortunate error" was to blame for Newcastle United being called "black and white scum" in subtitles broadcast on Match Of The Day 2 during their match against Liverpool on Sunday.
Another wrote: "Brave men died so the big brave scum could throw paint all over their memorial...
SPOTLIGHT He also studied at the Corona Theatre School where he came to the attention of director Alan Clarke who cast him as Carlin in the controversial BBC play Scum in 1977.