traveling-wave tube

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

noun Electronics.

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

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020