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scoria

American  
[skawr-ee-uh, skohr-] / ˈskɔr i ə, ˈskoʊr- /

noun

plural

scoriae

  1. Metallurgy. the refuse, dross, or slag left after melting or smelting metal; scum.

  2. Geology. a cinderlike basic cellular lava.

scoria British  
/ ˈskɔːrɪə, ˌskɔːrɪˈeɪʃəs /

noun

  1. a rough cindery crust on top of solidified lava flows containing numerous vesicles

  2. refuse obtained from smelted ore; slag

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
scoria Scientific  
/ skôr′ē-ə /

plural

scoriae

  1. Rough, crusty, solidified lava containing numerous vesicles that originated as gas bubbles in the lava while it was still molten.

Other Word Forms

Etymology

Origin of scoria

1350–1400; Middle English < Latin scōria < Greek skōría, derivative of skôr dung

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Scoria, skō′ri-a, n. dross or slag left from metal or ores after being under fire: a genus of geometrid moths:—pl.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

I sought for an old friend of mine in Rome," said Don Silverio, endeavouring to gain his attention and divert his thought, "one Pamfilio Scoria.

From The Waters of Edera by Ouida

Scoria was falling, and destroying all the shrubs and flowers in the beautiful valley.

From Annie o' the Banks o' Dee by Stables, Gordon

There they would steal other horses from the Grosventres Indians, and drive them to their cache in the Scoria Hills whence they could emerge with them at their good pleasure and sell them at Pierre.

From Roosevelt in the Bad Lands by Hagedorn, Hermann

The Spaniards traversed the country of a cacique, Scoria, and arrived at the residence of another called Pariza.

From De Orbe Novo, Volume 1 (of 2) The Eight Decades of Peter Martyr D'Anghera by MacNutt, Francis Augustus

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.