basanite

noun

bas·​a·​nite

ˈbasəˌnīt,

-azə-

plural -s

1

: touchstone sense 1

2

: an extrusive-igneous rock composed of plagioclase, augite, olivine, and either nephelite or leucite

Word History

Etymology

Latin basanites

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