Read the dictionary definition of certify. All definitions for this word.
1. provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
1. His high fever attested to his illness
2. The buildings in Rome manifest a high level of architectural sophistication
3. This decision demonstrates his sense of fairness
2. declare legally insane
3. guarantee payment on; of checks
4. authorize officially
1. I am licensed to practice law in this state
5. guarantee as meeting a certain standard
1. certified grade AAA meat