Breadcrumb Home > Thesaurus > T Synonyms of tombaugh Find synonyms for: Noun 1. Tombaugh, Clyde Tombaugh, Clyde William Tombaugh usage: United States astronomer who discovered the planet Pluto (1906-1997) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of tombaugh (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: shibboleth Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language