1. (n.) The act of altering for the better, or correcting what is erroneous or faulty; correction; improvement.

2. (n.) Alteration by editorial criticism, as of a text so as to give a better reading; removal of errors or corruptions from a document; as, the book might be improved by judicious emendations.

Great Leap Forward addendum addition advance advancement alteration amelioration ascent attachment bettering betterment bill boost calendar change change of allegiance change of heart change of mind clause companion bills amendment correction dragnet clause editing emendation enacting clause enhancement enrichment escalator clause eugenics euthenics furtherance headway hold-up bill improvement joker lift melioration mend mending motion new birth omnibus bill paragraph pickup preferment privileged question progress progression promotion proviso question rebirth recension reclamation recovery recrudescence rectification redaction redemption reform reformation regeneration renascence renewal repair rescript rescription restoration revampment revisal revise revised edition revision revival rewrite rewriting rider rise saving clause upbeat uplift upping upswing uptrend upward mobility