Hippocastanaceae hippocampus • hippocastanaceous · · · Info · Definitions · Characters · · Hippocastanaceae · · Text Latin · · Script 16 · · Length Definitions · · · (noun) trees having showy flowers and inedible nutlike seeds in a leathery capsule. Synonyms: family Hippocastanaceae, horse-chestnut family. · · Noun Definition 1 Characters · · H latin capital letter h U+0048 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 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074