rectify

Make right or correct.

“rectify the calculation”

Bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one.

Set straight or right.

“rectify the inequities in salaries”

Reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities.

Convert into direct current.

“rectify alternating current”

Math: determine the length of.

“rectify a curve”