What is "rectificator"

Rectificator \Rec"ti*fi*ca`tor\ (r?k"t?*f?*k?`t?r), n. (Chem.) That which rectifies or refines; esp., a part of a distilling apparatus in which the more volatile portions are separated from the less volatile by the process of evaporation and condensation; a rectifier.

n. (context chemistry English) That which rectify or refines; especially, a part of a distilling apparatus in which the more volatile portions are separated from the less volatile by evaporation and condensation; a rectifier.