1) Ancient Roman government 2) Ecclesiastical title 
The Latin term primicerius, hellenized as primikērios (πριμικήριος), was a title applied in the later Roman Empire and the Byzantine Empire to the heads of administrative departments, and also used by the Church to denote the heads of various colleges. Etymologically the term derives from primus in cera, which is to say in tabula cerat...
Late Roman officer.
A Byzantine officer or senior centurion.