All 3 Uses

rectify
in
War and Peace
(Edited)

Our duty, my dear, is to rectify his mistake, to ease his last moments by not letting him commit this injustice, and not to let him die feeling that he is rendering unhappy those who….
Chpt 1

rectify = correct
Having given orders in the commander in chief's name to rectify this omission, Prince Andrew galloped back.
Chpt 3 *
At the battle of Borodino, when Bagration was killed and nine tenths of the men of our left flank had fallen and the full force of the French artillery fire was directed against it, the man sent there was this same irresolute and undiscerning Dokhturov—Kutuzov hastening to rectify a mistake he had made by sending someone else there first.
Chpt 13

rectify = fix

Definitions:

(1) (rectify as in: rectify the error)
correct, fix, or make right
(2) (meaning too rare to warrant focus)
Specialized definitions of rectify include:
- chemistry: purify (e.g., via repeated distillation)
- manufacturing: separate from extraneous matter or cleanse from impurities
- electronics: convert alternate current into direct current