GNU Collaborative International Dictionary of English

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  1.       
    
    Scoria , n.; pl. Scoriae . [L., fr. Gr. , fr. dung, ordure.]
    1. The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross.
      1913 Webster
    2. Cellular slaggy lava; volcanic cinders.
      1913 Webster

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