marantáceo , a . ( Of arrowroot , name of a genus of plants, and -áceo ). 1. adj. Bot. Says of the Angiosperms plants herbaceous, monocot, asymmetric and petiolate leaves, irregular hermaphrodite flower with calyx and corolla, completely asymmetrical and assembled in compound inflorescences, fruit in capsule, Berry, or nut, and seeds with aryl. U t. c. s. f. 2. f. pl. Bot. These plant family. O RTOGR. ESCR. with may. initial.