Emma

Em·​ma

ˈemə

—a communications code word for the letter m see ack emma, pip emma

Word History

Etymology

from British signalmen's pronunciation of M (as in A.M.)

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