GNU Collaborative International Dictionary of English
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Found one definition
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‖Scoria , n.; pl. Scoriae . [L., fr. Gr. >, fr. > dung, ordure.]
- The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross.1913 Webster
- Cellular slaggy lava; volcanic cinders.1913 Webster
- The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross.