scoria

play
noun sco·ria \ ˈskȯr-ē-ə \

Definition of scoria

plural scoriae play \ˈskȯr-ē-ˌē, -ē-ˌī\
1 :the refuse from melting of metals or reduction of ores :slag
2 :rough vesicular cindery lava

scoriaceous

play \ˌskȯr-ē-ˈā-shəs\ adjective

Origin and Etymology of scoria

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


Learn More about scoria


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

agreeable, attractive, or delicious

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

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!