verification
1. [ noun ] additional proof that something that was believed (some fact or hypothesis or theory) is correct
Synonyms: confirmation check substantiation
Examples:

"fossils provided further confirmation of the evolutionary theory"

Related terms: proof checksum parity_check bed_check crosscheck confirm verify confirm
2. [ noun ] (law) an affidavit attached to a statement confirming the truth of that statement
Related terms: deposition law
Similar spelling:   verificatory