1 adjust or make right; correct, amend.
2 purify or refine, esp. by repeated distillation.
3 find a straight line equal in length to (a curve).
4 convert (alternating current) to direct current.
Derivatives:
rectifiable adj. rectification n.
Etymology: ME f. OF rectifier f. med.L rectificare f. L rectus right
Useful english dictionary. 2012.