Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun validation

2 senses of validation

Sense 1
validation, proof, substantiation -- (the act of validating; finding or testing the truth of something)
       => determination, finding -- (the act of determining the properties of something, usually by research or calculation; "the determination of molecular structures")

Sense 2
establishment, validation -- (the cognitive process of establishing a valid proof)
       => proof, cogent evidence -- (any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it")

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