tr.v. val·i·dat·ed, val·i·dat·ing, val·i·dates
1. To establish the soundness, accuracy, or legitimacy of: validate the test results; validate a concern. See Synonyms at confirm.
2. To declare or make legally valid: validate an election.
3. To mark with an indication of official sanction: The official validated my passport with a stamp.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.