Gotten this off Podcasting News:
The Oxford University Press, publishers of the New Oxford American Dictionary, has selected podcast as the Word of the Year for 2005 …
… Oxford University Press defines podcast as “a digital recording of a radio broadcast or similar program, made available on the Internet for downloading to a personal audio player.” While the Oxford definition would be considered incorrect by many podcasters, it reflects common usage without being overly technical.
… and the full report goes here.