'Validation' definitions:
Definition of 'validation'
From: WordNet
noun
The act of validating; finding or testing the truth of something [syn: validation, proof, substantiation]
noun
The cognitive process of establishing a valid proof [syn: establishment, validation]
Definition of 'Validation'
From: GCIDE
- Validation \Val`i*da"tion\, n. [Cf. F. validation.] The act of giving validity. [R.] --Knowles. [1913 Webster]