arboretum arboreta • arborical · · · Info · Definitions · Synonyms · Characters · · arboretum · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a facility where trees and shrubs are cultivated for exhibition. Synonyms: botanical garden. · · Noun Definition 1 Synonyms · · · botanical garden · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075