1. (noun) a former town on the Bosporus (now part of Istanbul); site of the Council of Chalcedon

• kadikoy

2. (noun) the fourth ecumenical council in 451 which defined the two natures (human and divine) of Christ

• council of chalcedon

1. (noun) the fourth ecumenical council in 451 which defined the two natures (human and divine) of Christ

• ecumenical council