rectificator

from The Century Dictionary.

• noun The part or parts of a modern still for alcoholic liquors in which rectification takes place. See rectification .

from the GNU version of the Collaborative International Dictionary of English.

• noun (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry That which rectifies 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.