longitude signal

noun

: a telegraphic or radio time signal sent out from a station whose longitude is known and received at other stations whose longitude is to be determined from the differences in local time

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