Episode
Episode is the word usually used to refer to a part of a serial television or radio program. An episode is a part of a sequence of a body of work, akin to a chapter of a book.
Episodes which end in the middle of a climatic moment are often called cliffhangers. Such episodes can be nearly daily occurrences in soap operas and are frequently used in season finales of many prime time shows.
Episodes can be part of a larger story arc stretched out over a time period covering one or more seasons, or even an entire series run.
Shows usually have numbers or codes for each episode. An example of a code would be in the format "sXnn", with 's' identifying the season number and 'nn' being a two-digit number for each show, starting with '01'. Some programs use numbering systems that are hard for anyone outside the production company to understand. Some series often give episodes their own titles which usually refer to the content of the episode, giving both producers and fans a simple identification.
Source - wikipedia.org
Rukia no akumu
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