chalcedon

Noun chalcedon has 2 senses

• chalcedon(n = noun.location) kadikoy - a former town on the Bosporus (now part of Istanbul); site of the Council of Chalcedon;
is a kind of town
is a part of constantinople, istanbul, stamboul, stambul

• chalcedon(n = noun.group) council of chalcedon - the fourth ecumenical council in 451 which defined the two natures (human and divine) of Christ;
is a kind of ecumenical council