Look up podcast in Wiktionary, the free dictionary. The Serial podcast being played through an iPhone A podcast or generically netcast, is an episodic series of digital audio or video files which a user can download to listen. Alternatively, the word "podcast" may refer to the individual component of such a series or to an individual media file.
Although podcasting is new, it is well on its way to becoming a mainstream communication medium. Podcasting, simply put, is audio files that are delivered via RSS. Many people believe that podcasting is solely for the distribution of music files, but really, nothing could be further from the truth. This emerging method of audio file distribution has opened an array of marketing and communication opportunities to businesses. Currently, most who are familiar with podcasting are technically savvy, but it is clear that podcasting will be more than a passing fad as many businesses are adopting podcasting and employing it in unusual yet powerful ways. Podcasting can be used for talk shows, tutorials, music demos, educational training, stories, comedy clips, debates or even foreign language tutorials.