0 having a document that proves that you have successfully finished a course of training:
1 having a document that proves you have successfully completed a course of training:
a certified teacher
[ + to infinitive ] She is certified to practice medicine.
2 approved by an official organization to do a particular job because you have successfully completed its examination and proved that you have the necessary training and qualifications:
All certified dental assistants have been certified by the Dental Assisting National Board.
a certified accountant
