tombaugh tombal • tomb bat · · · Info · Definitions · Characters · · tombaugh · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) United States astronomer who discovered the planet Pluto (1906-1997). Synonyms: Tombaugh, Clyde Tombaugh, Clyde William Tombaugh. · · Noun Definition 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 g latin small letter g U+0067 h latin small letter h U+0068 m latin small letter m U+006D o latin small letter o U+006F t latin small letter t U+0074 u latin small letter u U+0075