n.1 one event or a group of events as part of a sequence.
2 each of the parts of a serial story or broadcast.
3 an incident or set of incidents in a narrative.
4 an incident that is distinct but contributes to a whole (a romantic episode in her life).
5 Mus. a passage containing distinct material or introducing a new subject.
6 the part between two choric songs in Greek tragedy.
Etymology: Gk epeisodion (as EPI- + eisodos entry f. eis into + hodos way)