Meaning of “certify” in the English Dictionary

"certify" in British English

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certifyverb

uk /ˈsɜː.tɪ.faɪ/ us /ˈsɝː.t̬ə.faɪ/

[ I or T ] to say in a formal or official way, usually in writing, that something is true or correct:

[ + (that) ] I hereby certify (that) the above information is true and accurate.
[ + noun/adj ] The driver was certified (as) dead on arrival at the hospital.
The meat has been certified (as) fit for human consumption.

[ T ] to say officially that someone is mentally ill:

As a young man, he had been certified and sent to a hospital for the mentally ill.
certification
noun [ U ] uk /ˌsɜː.tɪ.fɪˈkeɪ.ʃən/ us /ˌsɝː.t̬ə.fəˈkeɪ.ʃən/

(Definition of “certify” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"certify" in American English

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certifyverb [ T ]

us /ˈsərt̬·əˌfɑɪ/ fml

to state something officially, esp. that something is true or correct or that someone has been trained to a particular standard:

Inspectors must certify that the building is safe.

(Definition of “certify” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"certify" in Business English

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certifyverb [ T ]

uk /ˈsɜːtɪfaɪ/ us

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” from the Cambridge Business English Dictionary © Cambridge University Press)