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

rare earth

noun

Definition of rare earth

  1. 1 :  any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals

  2. 2 :  rare earth element



1875

First Known Use of rare earth

1875


Medical Dictionary

rare earth

play
noun \ˌrer-ˈərth\

Medical Definition of rare earth

  1. 1:  any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals

  2. 2:  rare earth element




Learn More about rare earth

  1. Medical Dictionary: Definition of rare earth


Seen and Heard

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

WORD OF THE DAY

airtight or solitary

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

two-chairs-on-a-pier-by-the-ocean-in-summer

Which of the following words means “of or relating to summer”?

vernal hiemal brumal estival
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