Noun validation has 2 senses

• validation(n = noun.act) proof, substantiation - the act of validating; finding or testing the truth of something; Array
is a kind of determination, finding
has particulars: authentication, certification, documentation, support, monetisation, monetization, probate
Derived forms verb validate₂, verb validate₃

• validation(n = noun.cognition) establishment - the cognitive process of establishing a valid proof; Array
is a kind of cogent evidence, proof
Derived forms verb validate₂, verb validate₃