Noun
The state or quality of being apostolical.
Source: Webster's dictionaryAccordingly, these Protestants strip the notion of apostolic succession from the definition of "apostolic" or "apostolicity." Source: Internet
Since the bishop, once ordained, becomes the guarantor of apostolicity and successor of the apostles; he joins together all the bishops, thus maintaining episkope of the local Churches derived from the college of the apostles. Source: Internet