Rectify

From Old French rectifier ("to make straight"), from Medieval Latin rÄ“ctificÄre ("make right"), from Latin rÄ“ctus ("straight")

Full definition of rectify

(transitive) To correct or amend something.
(transitive, chemistry) To purify or refine, especially by distillation.
(transitive, electronics) To convert alternating current into direct current.
(transitive, transitive) To produce (as factitious gin or brandy) by redistilling bad wines or strong spirits (whisky, rum, etc.) with flavourings.
(transitive, transitive) To adjust (a globe) in order to prepare for the solution of a proposed problem.