papal infallibility: Meaning and Definition of

pa'pal infallibil'ity

Pronunciation: [key]
— Rom. Cath. Ch. Rom. Cath. Ch.
  1. the dogma that the pope cannot err in a solemn teaching addressed to the whole church on a matter of faith or morals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.