scoria 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
the scum formed by oxidation at the surface of molten metals
Hypernym
scum 2
noun
a film of impurities or vegetation that can form on the surface of a liquid
EnglishHyponym
basic slag 1
noun
slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer
