As Mr. Webster will happily point out, the one that gains common usage often becomes the real definition over time, even if it's technically incorrect. That's why we park in our driveways and drive on our parkways, for example.

Even in the wikipedia article there's a note that the term "aGPS" is often used for cell tower triangulation, which unfortunately is very close to (and easily confused with) A-GPS. In fact, I would be quite surprised if Nokia is actually doing A-GPS (downloading the almanac and such), vs just aGPS and using that as a rough start point for the GPS.

I just wish it wouldn't give an "authoritative" location based on a bad-data triangulation return from A-GPS (or aGPS) being on. I have multiple levels of cached blue water tiles just off the coast of Africa thanks to that.