Definition of "Rectify" :

verb: convert into direct current

"Rectify alternating current."

verb: make right or correct

"Rectify the calculation."

verb: set straight or right

"Rectify the inequities in salaries."

verb: bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one

verb: reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities

verb: math: determine the length of

"Rectify a curve."