irrefrangible

adjective

ir·​refrangible

¦i,

¦ir,

¦iə+

1

: irrefragable sense 2

2

: not capable of being refracted

—used of visible light and other radiations

Word History

Etymology

in- entry 1 + refrangible

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