rhenium

noun
rhe·​ni·​um | \ˈrē-nē-əm \

Definition of rhenium 

: a rare heavy metallic element that is obtained either as a gray powder or as a silver-white hard metal, is usually extracted as a by-product of molybdenum smelting, and is used especially in catalysts and alloys — see Chemical Elements Table

Examples of rhenium in a Sentence

Recent Examples on the Web

For example, the DoD is pushing to improve the recovery of rhenium, a rare earth element that is key to produce the new stealth Joint Strike Fighters for its exceptional heat-resistant properties. Lorenzo Franceschi-bicchierai, WIRED, "To Keep Stealth Edge, Pentagon Looks for New Ways to Mine ‘Rare Earths’," 7 Aug. 2012

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

First Known Use of rhenium

1925, in the meaning defined above

History and Etymology for rhenium

New Latin, from Latin Rhenus Rhine River

Keep scrolling for more

Learn More about rhenium

Statistics for rhenium

Look-up Popularity

Time Traveler for rhenium

The first known use of rhenium was in 1925

See more words from the same year

Keep scrolling for more

More Definitions for rhenium

rhenium

noun
rhe·​ni·​um | \ˈrē-nē-əm \

Medical Definition of rhenium 

: a rare heavy metallic element that resembles manganese, is obtained either as a powder or as a silver-white hard metal, and is used in catalysts for dehydrogenation and in thermocouples symbol Re — see Chemical Elements Table

More from Merriam-Webster on rhenium

Britannica.com: Encyclopedia article about rhenium

Comments on rhenium

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

WORD OF THE DAY

a private place of worship

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

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!