“Podcast” (a digital recording of a radio broadcast or similar programme, made available on the Internet for downloading to a personal audio player) is now an official part of the English language, as the word has been included in the Oxford Dictionary.

Other words making the big time include:

clueful: adjective informal having knowledge or understanding of something; well informed: Rob Enderle is not very clueful about Apple Macintosh computers.

fanboy: noun informal a male fan, especially one who is obsessive about comics, music, film, or science fiction: Paul Thurrott is (or was?) a Microsoft fanboy.

offshoring: noun [mass noun] the practice of basing some of a company’s processes or services overseas, so as to take advantage of lower costs: Dell’s phone support offshoring was an abysmal failure.

supersize: adjective larger than average or standard sizes; extremely large. verb [with obj.] [often as adj.] (supersized) greatly increase the size of: The gleeful RealNetworks CEO ordered a supersized box of Krispy Kremes.

See the new words recently added to the Oxford Dictionary here.
For those who might be wondering, “iPod” is already in the Oxford Dictionary and defined as “a proprietary name for a personal audio player.”

Related articles:
Microsoft employees squeamish about ‘podcast’ term, try using ‘blogcast’ instead – July 11, 2005