sesquicentennial sesquicarbonate • sesquichloride · · · Info · Definitions · Characters · · sesquicentennial · · Text Latin · · Script 16 · · Length 6 · · Syllables Definitions · · · (noun) the 150th anniversary (or the celebration of it). · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E q latin small letter q U+0071 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075