rare earth element

noun
|Updated on: 15 Jun 2018

Definition of rare earth element

: any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal

Recent Examples of rare earth element from the Web

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

First Known Use of rare earth element

1924

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

rare earth element

noun

medical Definition of rare earth element

: any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal

Seen and Heard

What made you want to look up rare earth element? 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

soothing, mild, or foolish

Get Word of the Day daily email!

Test Your Vocabulary

Name More Food!

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!