If someone is certified as a particular kind of worker, they are given a certificate stating that they have successfully completed a course of training in their profession. They wanted to get certified as divers. a certified accountant + certification cer·ti·fi·ca·tion Pupils would be offered on-the-job training leading to the certification of their skill in a particular field
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness"
Certify is to store error information (defect sectors) obtained as a result of the checking performed before the magneto optical disk is delivered in a Primary Defect List (PDL) The sectors that are registered are not used
If someone in an official position certifies something, they officially state that it is true. if the president certified that the project would receive at least $650m from overseas sources The National Election Council is supposed to certify the results of the election It has been certified as genuine Mrs Simpson was certified dead. + certification certifications cer·ti·fi·ca·tion An employer can demand written certification that the relative is really ill