dioon: any cycad of the genus Dioon; handsome palmlike cycads with robust crowns of leaves and rugged trunks
cycad: any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
sacrament: a formal religious ceremony conferring a specific grace on those who receive it; the two Protestant ceremonies are baptism and the Lord's Supper; in the Roman Catholic Church and the Eastern Orthodox Church there are seven traditional rites accepted as instituted by Jesus: baptism and confirmation and Holy Eucharist and penance and holy orders and matrimony and extreme unction