beryllium oxide

noun

: 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!

Dictionary Entries Near beryllium oxide

Cite this Entry

“Beryllium oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beryllium%20oxide. Accessed 26 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!