helicon helicometry • Heliconia · · · Info · Definitions · Synonyms · Characters · · helicon · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a tuba that coils over the shoulder of the musician. Synonyms: bombardon. · · Noun Definition 1 Synonyms · · · bombardon · · Synonym 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F