scoriae

sco·ri·a

[skawr-ee-uh, skohr-]
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; Middle English < Latin scōria < Greek skōría, derivative of skôr dung

sco·ri·a·ceous [skawr-ee-ey-shuhs, skohr-] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
scoria (ˈskɔːrɪə) [Click for IPA pronunciation guide]
 
n , pl -riae
1.  a rough cindery crust on top of solidified lava flows containing numerous vesicles
2.  refuse obtained from smelted ore; slag
 
[C17: from Latin: dross, from Greek skōria, from skōr excrement]
 
scoriaceous
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Scoriae is always a great word to know.
So is interrobang. Does it mean:
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
American Heritage
Science Dictionary
scoria   (skôr'ē-ə)  Pronunciation Key 
Plural scoriae (skôr'ē-ē')
Rough, crusty, solidified lava containing numerous vesicles that originated as gas bubbles in the lava while it was still molten.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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