rosieresite

noun

ro·​si·​er·​e·​site

ˌrōzēˈerəˌsīt

plural -s

: a mineral consisting of a hydrous aluminum phosphate containing lead and copper and occurring in yellow to brown stalactitic masses (specific gravity 2.2)

Word History

Etymology

French rosiérésite, from Rosières, copper mine near Carmaux, southern France + French -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