rectify

verb

1. determine the length of"rectify a curve"
2. reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities"refine sugar"
3. bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one"The Church reformed me"
4. set straight or right"remedy these deficiencies"
5. make right or correct"Correct the mistakes"
6. convert into direct current"rectify alternating current"