allamandaPronunciation: /ˌaləˈmandə/Definition of allamanda noun any of a number of tropical shrubs or climbers which bear showy yellow or purple flowers. Several species, particularly in the genus Allamanda (family Apocynaceae) Origin:modern Latin, named after Jean-Nicholas-Sébastien Allamand (1713–87), Swiss naturalistallamanda in other Oxford dictionaries Definition of allamanda in the US English dictionary