from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The quality of being apostolic, notably of preserving authenticity within the mission and tradition of the Christian church as founded by Jesus Christ and his twelve original Apostles, through their representatives and successors in the papacy and episcopate.
from The Century Dictionary and Cyclopedia
- n. The quality of being apostolic; one of the four qualities of the true church as given in the Constantinopolitan Creed, a. d. 381, namely, unity, sanctity, catholicity, apostolicity.
From apostolic + -ity, after French apostolicité. (Wiktionary)