1. math: determine the length of

- rectify a curve

Definition categories: communication, ascertain, determine, find

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

Similar word(s): refine

Definition categories: change, distill, purify, sublimate

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

Similar word(s): reclaim, reform, regenerate

Definition categories: change, alter, modify

4. set straight or right

- rectify the inequities in salaries

Similar word(s): amend, remediate, remedy, repair

Definition categories: change, correct, rectify, right

5. make right or correct

- Correct the mistakes

- rectify the calculation

Similar word(s): correct, right

Definition categories: change, reverse, turn

6. convert into direct current

- rectify alternating current

Definition categories: change, commute, convert, exchange