rooseveltite

noun

roo·​se·​velt·​ite

-lˌtīt

plural -s

: a bismuth arsenate found in Santiaguilo, Potosí, and Bolivia

Word History

Etymology

F. D. Roosevelt + English -ite

First Known Use

1947, in the meaning defined above

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