an incident in the course of a series of events, in a person's life or experience, etc.

an incident, scene, etc., within a narrative, usually fully developed and either integrated within the main story or digressing from it.

one of a number of loosely connected, but usually thematically related, scenes or stories constituting a literary work.

epeisodion.

Music . an intermediate or digressive passage, esp. in a contrapuntal composition.

Movies, Radio, and Television . any one of the separate productions that constitute a serial.

noun

affair , business , chapter , circumstance , doings , event , experience , goings-on , happening , incident , installment , interlude , matter , occasion , occurrence , part , passage , section , thing * , what’s going down , development , news , thing , adventure , scene , story