plural -s
: a mineral ideally Ca0.16Al3Si3.17O10(OH)2 that is a common constituent of certain clays and consists of basic aluminosilicate with exchangeable calcium, sodium, or other cation

Word History


Beidell, locality in Colorado + English -ite

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 beidellite

Cite this Entry

“Beidellite.” Dictionary, Merriam-Webster, Accessed 13 Apr. 2024.

Love words? Need even more definitions?

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