noun thort·veit·ite \(ˈ)tȯ(r)t¦vīˌtīt, (ˈ)thȯ-\

Definition of thortveitite



  1. :  a mineral (Sc,Y)2Si2O7 consisting of scandium yttrium silicate and occurring in slender grayish-green orthorhombic crystals (hardness 6–7, specific gravity 3.6)

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of thortveitite

German thortveitit, from Olaus Thortveit, 20th century Norwegian mineralogist + German -it -ite

Seen and Heard

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


to criticize severely

Get Word of the Day daily email!