Breadcrumb Home > Dictionary > Index T traveling-wave tube: Meaning and Definition of Find definitions for: trav'eling-wave' tube" Pronunciation: (trav'u-ling-wāv', trav'ling-), [key] — Electronics. Electronics. an electron tube used in microwave communications systems, having an electron beam directed coaxially through a wire helix to produce amplification. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. traveling salesman problem travelled TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: meretricious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language