verify

verb

1. 1

   confirm the truth of

   Please verify that the doors are closed

   verify a claim

2. 2

   to declare or affirm solemnly and formally as true

   Before God I swear I am innocent

3. 3

   attach or append a legal verification to (a pleading or petition)

4. 4

   check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard

   Are you controlling for the temperature?