/dɪˌsɜrtəfɪˈkeɪʃən/ – noun
Definition: Hủy bỏ chứng chỉ hoặc giấy chứng nhận.
A more throughout explanation: the act of withdrawing or otherwise ending the certification of something (=formal statement that something is true and correct or that a person can perform a certain job, that something is of a particular quality, etc.)
Example: The hospital’s September decertification decision was made following an inspection that included serious criticisms of the hospital.