IPA: /ˌrætɪfɪˈkeɪʃən/
KK: /rætɪfɪˈkeɪʃən/
The act of formally agreeing to a treaty, contract, or agreement, which makes it officially valid.
The ratification of the treaty was celebrated by both countries.
Ratification → It is formed from "ratificare" (meaning to confirm or approve) which comes from "ratus" (meaning approved) and "facere" (meaning to make or do). The word "ratification" means the act of making something officially approved or confirmed.
Think of the process of 'making something approved' — 'ratificare' means to confirm, and that's what ratification is all about.