scoria

noun
sco·​ria | \ˈskȯr-ē-ə \
plural scoriae\ˈskȯr-​ē-​ˌē, -​ē-​ˌī \

Definition of scoria 

1 : the refuse from melting of metals or reduction of ores : slag

2 : rough vesicular cindery lava

Keep scrolling for more

Other Words from scoria

scoriaceous \ˌskȯr-​ē-​ˈā-​shəs \ 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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'scoria.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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

Keep scrolling for more

Learn More about scoria

Statistics for scoria

Look-up Popularity

Time Traveler for scoria

The first known use of scoria was in the 14th century

See more words from the same century

More from Merriam-Webster on scoria

Rhyming Dictionary: Words that rhyme with scoria

Britannica.com: Encyclopedia article about scoria

Comments on scoria

What made you want to look up scoria? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!