— cassational , adj.
/ka say"sheuhn, keuh-/ , n.
1. annulment; cancellation; reversal.
2. Music. an 18th-century instrumental suite for outdoor performance, similar to the divertimento and the serenade.
[ 1375-1425; late ME cassacio ( u ) n cassation- (s. of cassatio ), equiv. to LL cassat ( us ) ptp. of cassare to annul ( cass- var. of L quass- (see QUASH) + -atus -ATE 1 ) + -ion- -ION ]