beryllium oxide

noun

Definition of beryllium oxide

: a white amorphous compound BeO having high thermal conductivity and high electrical resistance that is usually obtained by treatment of beryl ore and is used chiefly as a high-temperature refractory (as in crucibles) and in phosphors (as for television screens, X-ray equipment, and formerly fluorescent lamps)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More About beryllium oxide

Dictionary Entries Near beryllium oxide

beryllium

beryllium oxide

berylloid

See More Nearby Entries 

Statistics for beryllium oxide

Cite this Entry

“Beryllium oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beryllium%20oxide. Accessed 1 Aug. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!