traveling-wave tube

noun

: an electron tube used for the generation of microwave frequency radiation or for amplification at ultrahigh frequencies whose operation depends on the interaction of a beam of electrons with an electromagnetic wave

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