A digital audio file that can be downloaded over the Internet.  Once downloaded, a podcast can be played on a computer as a sound file or on an iPod or MP3 player to listen to at one’s leisure.  Podcasts are similar in many ways to radio programs.  
The word “podcast” is a combination of the words “iPod” and “broadcast.” Like “broadcast,” “podcast” can be a noun or a verb.

See our “What is podcasting” FAQ for more information.

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Podcast