New Inglish Word

Note: Please refer to a previous blog post for a definition of the words Inglish and Engrish.

Usually, PhD students or researchers here need to make a presentation about the progress of their work on a given schedule, but normally some would postpone their presentation a week or more later.  I on the other hand, scheduled for a presentation on November 6, asked to present one week earlier.  So one of the students asked me, "You preponed your presentation?"  I said, "What?"  He said, "Prepone."  I said, "I never heard of that word before."  He said, "It's the opposite of postpone."

So I looked it up on Google.  Did I just not know this word existed in English?  (I'm talking about American English, of course, or even British English.)  So this is the Google search link: http://www.google.com/search?hl=en&rlz=&q=what+does+the+word+prepone+mean%3F&um=1&ie=UTF-8&sa=N&tab=fw.

Apparently, it is not American nor British nor Australian English.  That's why I never heard of "prepone" - because it isn't English.  But it does exist - in the Inglish language.