bassanite

noun

bas·​sa·​nite

bə-ˈsä-ˌnīt

plural -s

: a mineral CaSO₄‧¹/₂H₂O consisting of calcium sulfate found in white opaque crystals in blocks ejected from Vesuvius in 1906 (specific gravity 2.69–2.76) compare plaster of paris

Word History

Etymology

Italian, from Francesco Bassani, 20th century Italian geologist + Italian -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