Noun: Chalcedon 'kal-si,dón or 'kal-si-dun
- The fourth ecumenical council in 451 which defined the two natures (human and divine) of Christ
- Council of Chalcedon
- A former town on the Bosporus (now part of Istanbul); site of the Council of Chalcedon
- Kadikoy
Type of: ecumenical council, town
Part of: Constantinople, Istanbul, Stamboul, Stambul
Encyclopedia: Chalcedon, Council of