put right; correct

mistakes made now cannot be rectified later

we are working to rectify the situation

convert (alternating current) to direct current

the current from the transformers is rectified by high-voltage diodes

find a straight line equal in length to (a curve)

his methods of rectifying the cycloid

purify or refine (a substance) by repeated or continuous distillation

butyl lactate was rectified, and the purified butyl lactate was sequentially hydrolysed