Biology is ridden with this right now - terms in immediate danger of inflating into their own universe include:

"sytems biology" "High throughput" "Integrative"

As well of course as the old favourites - "complexity" and "emergence". I'm reminded of Steven Pinkers "euphemistic treadmill". In both cases we have words losing their information content through use - losing meaning in terms of information, and in the latter sense at least gaining in in terms of emotional weight. Maybe there's a general tendency for words to melt out into smears across meaning-space because of the way we learn them by association? After all the process if unbounded should lead you to associate words with everything right?