A podcast is a digital audio file made available on the Internet for downloading to a computer or mobile device, typically available as a series, new installments of which can be received by subscribers automatically. Its origin is from the early 21st century, and comes from the words iPod and broadcast. [from Google Search]
Read about podcasting in this Podcast Research Starter.
Berry, Richard. "Podcasting: Considering the Evolution of the Medium and Its Association with the Word 'Radio'." Radio Journal: International Studies in Broadcast & Audio Media, vol. 14, no. 1, Apr. 2016, pp. 7-22. doi:10.1386/rjao.14.1.7_1.
Bottomley, Andrew J. "Podcasting: A Decade in the Life of a “New” Audio Medium: Introduction." Journal of Radio & Audio Media, vol. 22, no. 2, Nov. 2015, pp. 164-169. doi:10.1080/19376529.2015.1082880.
Hennig, Nicole. "A Guide to some of the Best Podcasts." Library Technology Reports, vol. 53, no. 2, Feb/Mar2017, pp. 16-29.
McHugh, Siobhán. "How Podcasting Is Changing the Audio Storytelling Genre." Radio Journal: International Studies in Broadcast & Audio Media, vol. 14, no. 1, Apr. 2016, pp. 65-82. doi:10.1386/rjao.14.1.65_1.
Vasquez, Vivian Maria. "Podcasting as Transformative Work." Theory into Practice, vol. 54, no. 2, Spring 2015, pp. 147-153. doi:10.1080/00405841.2015.1010848.