fiorite

noun

fi·​o·​rite

fēˈōrˌīt

plural -s

: an opal occurring near hot springs in grayish or whitish incrustations that sometimes are fibrous and pearly

Word History

Etymology

Santa Fiora, Tuscany, Italy, its locality + English -ite

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now