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scoria

 - 2 dictionary results

sco⋅ri⋅a

  [skawr-ee-uh, skohr-]
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–noun, plural sco⋅ri⋅ae  [skawr-ee-ee, skohr-] .
1. Metallurgy. the refuse, dross, or slag left after melting or smelting metal; scum.
2. Geology. a cinderlike basic cellular lava.
Origin:
1350–1400; ME < L scōria < Gk skōría, deriv. of skôr dung

Related forms:
sco⋅ri⋅a⋅ceous  [skawr-ee-ey-shuhs, skohr-] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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sco·ri·a   (skôr'ē-ə, skōr'-)   
n.   pl. sco·ri·ae (skôr'ē-ē', skōr'-)

  1. Geology Porous cinderlike fragments of dark lava. Also called cinders, slag.

  2. Metallurgy The refuse of a smelted metal or ore; slag. Also called cinder.


[Middle English, dross, from Latin scōria, from Greek skōriā, from skōr, excrement, dung; see sker-3 in Indo-European roots.]
sco'ri·a'ceous (-ā'shəs) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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