certificationnoun [ C/U ]
us/ˌsɜr·t̬ə·fɪˈkeɪ·ʃən/proof or a document proving that someone is qualified for a particular job, or that something is of good quality:
[ C ] Adult workers are increasingly going back to school for a degree or certification to improve their job opportunities.
[ U ] He will seek organic certification of his beef and poultry products.