To officially recognize someone or something as possessing certain qualifications or meeting certain standards. The board will certify the new teachers after they complete their training.
To attest or confirm in a formal statement. The accountant will certify the financial statements for the company.
To declare something to be true or accurate, especially in writing. The doctor will certify that the patient is fit to return to work.
To officially approve or label a product, process, or service as meeting a specified standard or quality. The coffee beans are certified organic by the agricultural board.