visual control

noun

: a remote supervisory control system in which code signals in the form of electric impulses are sent out by a dispatcher and return signals are received through the medium of colored lights

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