Pronunciation: (val'i-dāt"), [key]
—v.t., -dat•ed, -dat•ing.
1. to make valid; substantiate; confirm: Time validated our suspicions.
2. to give legal force to; legalize.
3. to give official sanction, confirmation, or approval to, as elected officials, election procedures, documents, etc.: to validate a passport.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.