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Definition of Slag
1. Noun. The scum formed by oxidation at the surface of molten metals.
2. Verb. Convert into slag.
Definition of Slag
1. n. The dross, or recrement, of a metal; also, vitrified cinders.
2. n. A product of smelting, containing, mostly as silicates, the substances not sought to be produced as matte or metal, and having a lower specific gravity than the latter; -- called also, esp. in iron smelting, cinder. The slag of iron blast furnaces is essentially silicate of calcium, magnesium, and aluminium; that of lead and copper smelting furnaces contains iron.
3. v. i. & t. To form, or form into, a slag; to agglomerate when heated below the fusion point.
Definition of Slag
1. to convert into slag (the fused residue of a smelted ore) [v SLAGGED, SLAGGING, SLAGS]
Medical Definition of Slag
1.
1. The dross, or recrement, of a metal; also, vitrified cinders.
2. The scoria of a volcano.