Ratify n. : To approve and sanction; to make valid; to confirm; to establish; to settle; especially, to give sanction to, as something done by an agent or servant; as, to ratify an agreement, treaty, or contract; to ratify a nomination.

Example:
What body has the power to Ratify treaties?

Taxonomy
constitution, treaty ratification, treaty, international treaty, member states, free encyclopedia, the European Union, referendums, Constitution of Ireland, government, Article Seven of the United States Constitution, legislature, the United States Constitution, Application, the European Parliament, democracies, Articles with unsourced statements, collective bargaining.

Defination from the web:
ratifying a constitution is most commonly observed in federations such as the United States, confederations or international ... It required that conventions of nine of the thirteen original States ratify the constitution. ... The Senate does not actually ratify treaties. ...