Rectifier
Pronunciation : Rec"ti*fi`er (rk"t*f`r)
Part of Speech : n.
Definition : 1. One who, or that which, rectifies.
2. Specifically: (a) (Naut.) An instrument used for determining and rectifying the variations of the compass on board ship. (b) (Chem.) A rectificator.
Source : Webster's Unabridged Dictionary, 1913