Officially approved or confirmed something, especially a contract or law, by signing it or voting for it.
From Medieval Latin 'ratificare' meaning 'to approve,' combining 'ratus' (fixed, firm) and 'facere' (to make). The '-ed' makes it past tense.
Major documents like the Constitution and treaties between countries must be 'ratified' to become law—one country ratifying a treaty means it's officially binding!
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