Rectification (noun)

1. The act of correcting or setting right; correction or amendment of something faulty or unsatisfactory.
2. The process of rectifying a circuit so that it produces a pure direct current.

Origin:

Late 16th century, from late latin rectificatio(n-), from latin rectificare, from rectus "right" + facere "to make".

Examples:

1. The company is undergoing a rectification program to improve its products.
2. A rectification of a signal is necessary to remove any noise.
3. The rectification of the errors in the report is critical for the credibility of the findings.
4. The rectification of the social injustices is a key aspect of democracy.
5. Rectification of the distorted image was done using computer software.