Definition of tilasite
: a mineral CaMg(AsO4)F consisting of a magnesium calcium arsenate and fluoride and occurring in violet-gray granular masses (specific gravity 3.3)
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!
Origin and Etymology of tilasite
Swedish tilasit, from Daniel Tilas †1772 Swedish mining engineer + Swedish -it -ite
Seen and Heard
What made you want to look up tilasite? Please tell us where you read or heard it (including the quote, if possible).