synaxis

noun2

1. •
   A day following a Great Feast in the Eastern Orthodox and Eastern Catholic churches, on which a person related to the events is remembered. For example, the Synaxis of John the Baptist follows the Theophany (Baptism of Christ), the Synaxis of the Archangel Gabriel follows the Annunciation, and the Synaxis of the Theotokos follows Christmas Day.
2. •
   (no longer used) A congregation.

   • Thus we find the bishops in the primitive church indicting of fasts , proclaiming assemblies , calling synods , gathering synaxes — 1660