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A podcast is a

digital media file[], either audio or video, that [is] downloaded directly or [is] streamed webcasting.[1]


"Podcasting" is a portmandeau of "broadcasting" and "iPod."

It is a way of publishing audio files (and more recently video files) on the web so they can be downloaded onto computers or portable music players. Podcasting allows users to subscribe to a feed of new audio files using software which automatically checks for and downloads new files.


  1. Department of Homeland Security, Privacy Impact Assessment for the Use of Unidirectional Social Media Applications Communications and Outreach 2 n.4 (Mar. 8, 2011).