I think the word is typically pronounced slightly differently (more correctly?) when used that way. This clip from The Hangover uses the slight differences in

I think the word is typically pronounced slightly differently (more correctly?) when used that way. This clip from The Hangover uses the slight differences in pronounciation for comedic effect: http://www.youtube.com/watch?v=PoendYt_ZJ0 http://www.youtube.com/watch?v=PoendYt_ZJ0 (skip to 0:45, video contains mildly offensive humor). Obviously the obsolete medical usage, now offensive usage, is just the regular word meaning delayed, but I think that somehow that specialized usage strayed from the generic usage over time.