Origin: Latin suffix -tion
Verification has 3 different meanings across 1 category:
additional proof that something that was believed (some fact or hypothesis or theory) is correct
"fossils provided further confirmation of the evolutionary theory"
(law) an affidavit attached to a statement confirming the truth of that statement
"The judge rejected our claim because we failed to submit the required verification, which is an affidavit sworn to confirm the accuracy of our legal statement."
The act of verifying.
"After submitting his tax returns, he waited anxiously for the verification from the IRS before celebrating early."
In plain English: Verification is the act of checking something to make sure it is true or correct.
"The verification of his identity took only a few seconds."
The word verification comes from the Old French verificacion and earlier Medieval Latin vērificātiō. It entered English with the meaning of confirming truth, derived directly from its Latin roots without a significant shift in definition over time.