ratifyv. t.[F. ratifier, fr. L. ratus fixed by calculation, firm, valid + -ficare (in comp.) to make. See Rate, n., and -fy.] 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.()It is impossible for the divine power to set a seal to a lie by ratifying an imposture with such a miracle. (South.)