The meaning of validation is an act, process, or instance of validating; Validation activities are conducted to ensure that the resulting products and services meet the requirements for the specified application or intended use. Definition of validation noun in oxford advanced learner's dictionary.
Jan 14, 2026noun validation (countable and uncountable, plural validations) the act of validating something. Validation is a process of evaluating or checking if a system, product, concept or activity meets specific standards, requirements, or fits the intended purpose. You will be prompted to enter your new password a second time for validation.
See examples of validation used in a sentence. Something, such as a certificate, that validates something; Attestation, authentication, confirmation, proof or verification.