Prosopium

noun

Pro·​so·​pi·​um

prəˈsōpēəm

: a genus of whitefishes including the Menominee whitefish, Rocky Mountain whitefish, and related forms

Word History

Etymology

New Latin, from Greek prosōpeion mask

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