granogabbro

noun

grano·​gabbro

" +

: a plutonic rock intermediate between a granite and a gabbro and consisting of quartz, basic plagioclase, potash-feldspar, and one or more ferromagnesian minerals

Word History

Etymology

grano- + gabbro

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