Pronunciation: (rat'u-fī"), [key]
—v.t., -fied, -fy•ing.
1. to confirm by expressing consent, approval, or formal sanction: to ratify a constitutional amendment.
2. to confirm (something done or arranged by an agent or by representatives) by such action.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.