Crossword clue: the fourth ecumenical council in 451 which defined the two natures (human and divine) of christ

The most common answer is chalcedon (9 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

chalcedon 9 letters wn-def

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