Hypertext Webster Gateway: "scoria"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Scoria \Sco"ri*a\, n.; pl. {Scori[ae]}. [L., fr. Gr. ?, fr. ?
dung, ordure.]
1. The recrement of metals in fusion, or the slag rejected
after the reduction of metallic ores; dross.
2. Cellular slaggy lava; volcanic cinders.
From WordNet (r) 1.7 (wn)
scoria
n : the scum formed by oxidation at the surface of molten metals
[syn: {slag}, {dross}]
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