'Papal infallibility' definitions:

Definition of 'papal infallibility'

From: WordNet
noun
Belief of the Roman Catholic Church that God protects the pope from error when he speaks about faith or morality

Definition of 'Papal infallibility'

From: GCIDE
  • Infallibility \In*fal`li*bil"i*ty\, n. [Cf. F. infaillibilit['e].] The quality or state of being infallible, or exempt from error; inerrability. [1913 Webster]
  • Infallibility is the highest perfection of the knowing faculty. --Tillotson. [1913 Webster]
  • Papal infallibility (R. C. Ch.), the dogma that the pope can not, when acting in his official character of supreme pontiff, err in defining a doctrine of Christian faith or rule of morals, to be held by the church. This was decreed by the Ecumenical Council at the Vatican, July 18, 1870. [1913 Webster]