† abˈscessionalObs.rare—1. [f. abscession + -al2; cf.processional. Prop.adj.sc. ‘order, decree’.] A permission or command to depart. 1656J. Trapp Exp. Matt. xix. 7 (1868) 216/1 It was true that Moses commanded..that he should give her an abscessionale, a bill of divorcement.