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English definition of “certify”

certify

verb [T]     /ˈsɜːtɪfaɪ/
to give someone official approval or permission to do a job because they have proved that they have the necessary skills and qualifications to do it: be certified by All of our surgeons have been certified by the American Board of Plastic Surgery.be certified as State officials are encouraging more farmers to become certified as organic growers.
to officially approve of something after testing its quality and proving that it is acceptable: be certified for Pharmaceuticals must be checked and certified for effectiveness and safety.
to formally and officially state that something is true, especially by signing an official or legal document: certify that The rules require sponsors to identify themselves and certify that they have no financial interest in the projects. To claim tax relief, submit a written statement from the lender to certify any interest paid on the loan.
(Definition of certify verb from the Cambridge Business English Dictionary © Cambridge University Press)
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