ˌdīəˈkänə̇ˌkän, -əkən noun
also di·a·con·i·cum -ə̇kəm
( plural diaconi·ca -ə̇kə)
Etymology: Late Latin & Late Greek; Late Latin diaconicum, from Late Greek diakonikon, from neuter of diakonikos of a deacon, from Greek, serviceable, from diakonos deacon, servant + -ikos -ic — more at deacon
Eastern Church : the sacristy at the right or north side of the bema opposite to the prothesis