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traveling-wave tube

American  
[trav-uh-ling-weyv, trav-ling-] / ˈtræv ə lɪŋˈweɪv, ˈtræv lɪŋ- /

noun

Electronics.

  1. an electron tube used in microwave communications systems, having an electron beam directed coaxially through a wire helix to produce amplification.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.