from The Century Dictionary and Cyclopedia
- n. In Greek churches, a room, usually on the south side of the bema or sanctuary, answering to the prothesis on the north side.
Sorry, no etymologies found.
The two smaller compartments and apses at the sides of the bema were sacristies, the _diaconicon_ and
The northern apse or chapel became the place of prothesis, and the other remained a sacristy or diaconicon.
The ieron is large, and at either side of it are the well-known arrange - ments for the prothesis on the north and the diaconicon on the south.