n. The act of occurring; occasional presentation.n. An incident or accidental event; that which happens without being designed or expected; an event; a happening: as, an unusual occurrence; such occurrences are not uncommon.n. Happenings collectively; course of events.n. Eccles., the coincidence of two or more festivals on the same day. See occur, v. i., 5, and concurrence, n., 4.