allemontite

noun

al·​le·​mont·​ite

ˌaləˈmänˌtīt

plural -s

: a mineral consisting of an arsenic antimony compound SbAs occurring in metallic-looking reniform masses

Word History

Etymology

French, from Allemont, Allemond, Isère department, France, its locality + French -ite

First Known Use

1850, 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