ramnáceo , a . ( De lat. scientific. ( rhamnus , name of a genus of plants). 1. adj. Bot. Reportedly, trees and shrubs dicotiledonous, sometimes thorny, leaves simple, alternate or opposite, with deciduous Stipules or persistent Stingers, flowers small, solitary or in cluster and drupe fruit; e.g., the Brier, the occurring and the jujube. U t. c. s. f. 2. f. pl. Bot. These plant family. O RTOGR. ESCR. with may. initial.