RECTIFICA'TION, noun 1. The act or operation of correcting, amending or setting right that which is wrong or erroneous; as the retification of errors, mistakes or abuses. 2. In chimistry, the process of refining or purifying any substance by repeated distiliation, which separates the grosser parts; as the rectification of spirits or sulphuric acid.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI