Wordnet 3.0
NOUN (1)
1.
the Lateran Council in 1215 was the most important council of the Middle Ages;
issued a creed against Albigensianism, published reformatory decrees, promulgated the doctrine of transubstantiation, and clarified church doctrine on the Trinity and Incarnation;
WordNet (r) 3.0 (2006):
Fourth Lateran Council
n 1: the Lateran Council in 1215 was the most important council
of the Middle Ages; issued a creed against Albigensianism,
published reformatory decrees, promulgated the doctrine of
transubstantiation, and clarified church doctrine on the
Trinity and Incarnation