To correct the faults in; remove mistakes from; set right.

改正；矫正；修正。

To refine or purify, as liquids, by distillation.

精炼；滤清(液体)；精馏。

To change (alternating current) to direct.

【电】整流。

To rectify is to set right something that is wrong. Rectify.

Rectify 指改正；错误。

To correct is to set right according to some standard such as accuracy, convention, etc.

Correct 乃依一标准(如精确性、习俗等)而更正。

These words are used interchangeably, but correct is a more definite term than rectify, which also carries a moral connotation.

此二字可互用，但 correct 比 rectify 有更确定之意义，同时 rectify 具有道德含义。