rectify in WordNet English dictionary

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