episodeyoudaoicibaDictYouDict[episode 词源字典]
episode: [17] In modern English, an episode is a component in a series of connected events, but originally it was something incidental, coming in adventitiously from the side. The word comes from Greek epeisódion ‘addition’, a noun use of the adjective epeisódios ‘coming in besides’. This was a compound formed from the prefix epí- ‘besides’ and the noun eísodos ‘coming in, entrance’ – which in turn was a compound formed from the preposition eis ‘into’ and hodós ‘way’ (a relative of Russian chodit’ ‘go’).
=> exodus[episode etymology, episode origin, 英语词源]
episode (n.)youdaoicibaDictYouDict
1670s, "commentary between two choric songs in a Greek tragedy," also "an incidental narrative or digression within a story, poem, etc.," from French épisode or directly from Greek epeisodion "an episode," literally "an addition," noun use of neuter of epeisodios "coming in besides," from epi "in addition" (see epi-) + eisodos "a coming in, entrance" (from eis "into" + hodos "way"). Transferred sense of "outstanding incident, experience" first recorded in English 1773. Transferred by 1930s to individual broadcasts of serial radio programs.