Breadcrumb Home > Thesaurus > W Synonyms of waveguide Find synonyms for: Noun1. waveguide, wave guide, conductorusage: a hollow metal conductor that provides a path to guide microwaves; used in radarWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of waveguide (Dictionary) ✖ Related Content Daily Word Quiz: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language