v.tr. (-ies, -ied) 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. rectifiable adj. rectification n.
[ ME f. OF rectifier f. med.L rectificare f. L rectus right ]