Webisode

A webisode is a portmanteau formed by the words 'web' and 'episode' that designates an episode of a series that is distributed as Internet television. It is available as either for download or in streaming, as opposed to first airing on broadcast or cable television. The format can be used as a preview, a promotion, as part of a collection of shorts, or a commercial.

A webisode may or may not have been broadcasted on TV. What defines it is its online distribution through video-sharing web sites such as Vimeo or YouTube, or its availability for download through peer-to-peer protocols, such as BitTorrent. While there is no set standard for length, most webisodes are relatively short, ranging from 3–15 minutes in length. It is a single web episode, but collectively is part of a web series, a form called web television that characteristically features a dramatic, serial storyline, where the primary method of viewership is streaming online over the Internet.

The term was first introduced in the Merriam-Webster's Collegiate Dictionary in 2009.