Word Origin & History
episode1678, from Gk. epeisodion "addition," originally neut. of epeisodios "coming in besides," from epi- "in addition" + eisodos "a coming in, entrance" (from eis "into" + hodos "way"). Originally commentary between two choric songs in Gk. tragedy; extended by 1679 to "any incidental narrative or digression
in a story, poem, etc." Sense of "outstanding incident, experience" first recorded in Eng. 1773.