Word of the Day: Obsolescence
What I think it means: My guess is something having to do with the word obsolete, since they share a root. Chances are, they’re related words.
What it actually means: *shock* the state, process, or condition of being or becoming obsolete
Ha, I figured! Though, I feel I wouldn’t have much a chance to use this in writing, since most of the time I could find a shorter, more common word to communicate the same concept.