4 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Slag \Slag\, v. i. & t. [imp. & p. p. {Slagged}; p. pr. & vb. n. {Slagging}.] (Metal.) To form, or form into, a slag; to agglomerate when heated below the fusion point. [Webster 1913 Suppl.] From The Collaborative International Dictionary of English v.0.48 [gcide]: Slag \Slag\ (sl[a^]g), n. [Sw. slagg, or LG. slacke, whence G. schlacke; originally, perhaps, the splinters struck off from the metal by hammering. See {Slay}, v. t.] 1. The dross, or recrement, of a metal; also, vitrified cinders. [1913 Webster] 2. The scoria of a volcano. [1913 Webster] 3. (Metal.) 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. [Webster 1913 Suppl.] {Slag furnace}, or {Slag hearth} (Metal.), a furnace, or hearth, for extracting lead from slags or poor ore. {Slag wool}, mineral wool. See under {Mineral}. [1913 Webster] From WordNet (r) 2.0 [wn]: slag n : the scum formed by oxidation at the surface of molten metals [syn: {scoria}, {dross}] [also: {slagging}, {slagged}] From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]: 81 Moby Thesaurus words for "slag": alluvion, alluvium, ash, ashes, bones, brand, calx, carbon, chaff, charcoal, cinder, clinker, coal, coke, coom, culm, deadwood, deposition, deposits, diluvium, dishwater, draff, dregs, dross, dust, ember, feces, filings, froth, fume, garbage, gash, grounds, hogwash, husks, lava, leavings, lees, loess, moraine, offal, offscourings, offscum, orts, parings, potsherds, precipitate, precipitation, rags, raspings, reek, refuse, scoria, scourings, scrap iron, scraps, scum, sediment, settlings, shards, shavings, silt, sinter, slack, slop, slops, smoke, smudge, smut, soot, stubble, sublimate, sullage, sweepings, swill, tares, wastage, waste, waste matter, wastepaper, weeds
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