dross(redirected from drossiness)
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1. Waste or impure matter: discarded the dross after recycling the wood pulp.
2. The scum that forms on the surface of molten metal as a result of oxidation.
3. Worthless, commonplace, or trivial matter: "He was wide-awake and his mind worked clearly, purged of all dross" (Vladimir Nabokov).
[Middle English dros, from Old English drōs, dregs.]
1. (Metallurgy) the scum formed, usually by oxidation, on the surfaces of molten metals
2. worthless matter; waste
[Old English drōs dregs; related to Old High German truosana]
1. waste matter; refuse.
2. a waste product taken off molten metal during smelting, essentially metallic in character.
[before 1050; Old English drōs; c. Middle Dutch droes dregs]
dross′y, adj. -i•er, -i•est.
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|Noun||1.||dross - worthless or dangerous material that should be removed; "there were impurities in the water"|
|2.||dross - the scum formed by oxidation at the surface of molten metals|
scum - a film of impurities or vegetation that can form on the surface of a liquid
basic slag - slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer