rectify >> ˈrɛktɪfʌɪ
Definition: [verb] put right; correct.
Example: mistakes made now cannot be rectified later
Definition: [verb] convert (alternating current) to direct current.
Example: the current from the transformers is rectified by high-voltage diodes
Definition: [verb] find a straight line equal in length to (a curve).
Example: his methods of rectifying the cycloid
Definition: [verb] purify or refine (a substance) by repeated or continuous distillation.
Example: butyl lactate was rectified, and the purified butyl lactate was sequentially hydrolysed