beryllium

noun
be·​ryl·​li·​um | \bə-ˈri-lē-əm \

Definition of beryllium 

: a toxic divalent metallic element with four protons that is steel-gray in color, light and strong but brittle, and is used chiefly as a hardening agent in alloys — see Chemical Elements Table

Examples of beryllium in a Sentence

Recent Examples on the Web

The MW07s have high-end materials in their construction, including stainless steel enclosures, 10mm beryllium drivers, and acetate covers. Stefan Etienne, The Verge, "Master & Dynamic MW07 earbuds review: truly wireless, truly expensive," 18 Sep. 2018 Master & Dynamic has made that possible with the MW50+ headphones that retail for $399 — these are premium cans with 40mm beryllium drivers, after all. Stefan Etienne, The Verge, "Master & Dynamic MW50+ review: weak magnetism," 5 July 2018 Soils below those levels are placed in other stockpiles, and further tested for beryllium and lead levels. Keith Matheny, Detroit Free Press, "Radioactive soil from Ohio heads to Wayne County landfill next week," 22 June 2018 In addition to beryllium, the soil contains lead and radioactive elements of thorium, radium and uranium. Keith Matheny, Detroit Free Press, "Radioactive soil from Ohio heads to Wayne County landfill next week," 22 June 2018 Harry Daghlian, another physicist at Los Alamos, had attempted a similar experiment the previous year using tungsten-carbide bricks instead of a beryllium dome. Julian G. West, The Atlantic, "The Atomic-Bomb Core That Escaped World War II," 2 Apr. 2018 In the early summer, just as a rule to put new limits on beryllium, an industrial mineral linked to lung disease, went into effect, the Occupational Safety and Health Administration proposed a rule to revoke some of its provisions. Eric Lipton And Danielle Ivory, New York Times, "Trump Says His Regulatory Rollback Already Is the ‘Most Far-Reaching’," 14 Dec. 2017 In the experiments described in the paper, IBM researchers used a quantum computer to derive the lowest energy state of a molecule of beryllium hydride. Jeremy Kahn, Bloomberg.com, "IBM Makes Breakthrough in Race to Commercialize Quantum Computers," 13 Sep. 2017 In the experiment, six of these quibits were used to map the energy states of the six electrons in the beryllium hydride molecule. Jeremy Kahn, Bloomberg.com, "IBM Makes Breakthrough in Race to Commercialize Quantum Computers," 13 Sep. 2017

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

See More

First Known Use of beryllium

1819, in the meaning defined above

History and Etymology for beryllium

New Latin, from Greek bēryllion

Keep scrolling for more

Learn More about beryllium

Statistics for beryllium

Last Updated

21 Nov 2018

Look-up Popularity

Time Traveler for beryllium

The first known use of beryllium was in 1819

See more words from the same year

Keep scrolling for more

More Definitions for beryllium

beryllium

noun
be·​ryl·​li·​um | \bə-ˈril-ē-əm \

Medical Definition of beryllium 

: a steel-gray light strong brittle toxic bivalent metallic element used chiefly as a hardening agent in alloys symbol Be — see Chemical Elements Table

More from Merriam-Webster on beryllium

Britannica.com: Encyclopedia article about beryllium

Comments on beryllium

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

WORD OF THE DAY

a nest or breeding place

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
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!