Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

peridotite

play
noun pe·ri·do·tite \pə-ˈri-də-ˌtīt\

Definition of peridotite

  1. :  any of a group of granular igneous rocks composed of ferromagnesian minerals and especially olivine

peridotitic play \pə-ˌri-də-ˈti-tik\ adjective


Origin of peridotite

French péridotite, from péridot


First Known Use: 1878


Learn More about peridotite


Seen and Heard

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

WORD OF THE DAY

to defraud especially of money

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

oily angry maudlin prompt
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ