Episode
An episode is a singular part of a story, radio or television program. Episodes often follow in an order. They are often 20 to 40 minutes long, and follow the same storyline.
Origin of the word[change]
Episode comes from the Greek word epeisodion which refers to the spoken words between two songs in a Greek tragedy. The word was first used in English in 1773 to mean an "outstanding incident, experience." By the 1930s, the word was used to refer to each broadcast of a radio program that was part of a series.[1]