scoria

noun sco·ria \ˈskȯr-ē-ə\

plural sco·ri·ae\-ē-ˌē, -ē-ˌī\

Definition of SCORIA

: the refuse from melting of metals or reduction of ores : slag

: rough vesicular cindery lava

— sco·ri·a·ceous \ˌskȯr-ē-ˈā-shəs\ adjective

See scoria defined for kids

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

First Known Use: 14th century

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