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scoria

noun
sco·​ria | \ ˈskȯr-ē-ə How to pronounce scoria (audio) \
plural scoriae\ ˈskȯr-​ē-​ˌē How to pronounce scoriae (audio) , -​ē-​ˌī \

Definition of scoria

1 : the refuse from melting of metals or reduction of ores : slag
2 : rough vesicular cindery lava
Other Words from scoria Example Sentences Learn More about scoria

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Other Words from scoria

scoriaceous \ ˌskȯr-​ē-​ˈā-​shəs How to pronounce scoriaceous (audio) \ adjective

Examples of scoria in a Sentence

Recent Examples on the Web

 As if the Easter Island statues weren’t enigmatic enough, a few of them are wearing hats—6.5-foot-wide, 13-ton cylinders of cindery red volcanic rock called scoria. — Kiona N. Smith, Ars Technica, "How does a preindustrial society put a 13-ton hat on a statue?," 5 June 2018

First Known Use of scoria

14th century, in the meaning defined at sense 1

History and Etymology for scoria

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

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