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scoria

play
noun sco·ria \ˈskȯr-ē-ə\

Definition of scoria

plural

scoriae

play \-ē-ˌē, -ē-ˌī\
  1. 1 :  the refuse from melting of metals or reduction of ores :  slag

  2. 2 :  rough vesicular cindery lava

scoriaceous

play \ˌskȯr-ē-ˈā-shəs\ adjective


Origin and Etymology of scoria

Middle English, from Latin, from Greek skōria, from skōr excrement — more at scatology


First Known Use: 14th century


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to make consistent or congruous

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