microgranite

noun

mi·​cro·​granite

¦mīkrō+

: an igneous rock composed of minute crystals of quartz and alkalic feldspar

Word History

Etymology

International Scientific Vocabulary micr- + granite; originally formed as German mikrogranit

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