Validation - definition of validation by The Free Dictionary
https://www.thefreedictionary.com/validation
Webnoun. That which confirms: attestation, authentication, confirmation, corroboration, demonstration, evidence, proof, substantiation, testament, testimonial, testimony, verification, warrant. The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company.
DA: 14 PA: 75 MOZ Rank: 91