1. To give formal approval or confirmation to something, especially a treaty or agreement, by signing or voting
The Senate will ratify the international trade agreement next month.
O Senado ratificará o acordo comercial internacional no próximo mês.
2. To officially confirm or validate something already agreed upon informally
The board meeting was held to ratify the decisions made by the executive committee.
A reunião do conselho foi realizada para ratificar as decisões tomadas pelo comitê executivo.