Lamprophony

Lamprophony (noun): Clear enunciation

There's no trace of lamps, pros, or phonies in this word's definition.  If you know that -phony means sound, you might guess that lamprophony is the sound of lampreys.  (Do they even make noise?) But no, lamprophony turns out to be a rather boring word that means clear enunciation.  (The Greek root lampro- means clear or distinct.)