plural -s
: a bluish gray mineral Pb10Ar6S19 occurring in compact masses that is a compound of lead, arsenic, and sulfur (specific gravity, 5.94)

Word History


Frank Guiterman 19th century American metallurgist + 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 guitermanite

Cite this Entry

“Guitermanite.” Dictionary, Merriam-Webster, Accessed 30 Sep. 2023.

Love words? Need even more definitions?

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