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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. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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