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prettygoodwordscoria (SKOHR-ee-ah) - n., the dross or refuse left over after smelting metal from ore, slag; a rough porous cindery lava.
The rock is a kind of cinder found around volcanos. The refuse is found around smelters. Used since the 14th century, from Latin, from Greek skōria, which may have originally meant rust, from skōr, excrement.
---L.
The rock is a kind of cinder found around volcanos. The refuse is found around smelters. Used since the 14th century, from Latin, from Greek skōria, which may have originally meant rust, from skōr, excrement.
---L.
