Well, auto-complete may very well be context-sensitive to your region, but Wikipedia isn't.
It's right there, front and center, at the top of the Wikipedia page for "AC Adapter." If I stumbled on it that quickly in a place that isn't particular to my sub-region, you probably will too! That's just how these things go.
You've probably heard of Ben Heck:
On these forums, many of us are aware of Retro Game Tech:
You'll probably hear it some place else by the end of the week.