Noun
sedevacantism (uncountable) (Christianity)
The belief, held by a minority of traditionalist Catholics, that the present occupant of the Holy See is not the true pope and that the see has been vacant since the 1960s.
Criticism Arguments Against Sedevacantism Against sedevacantism, Catholics loyal to Pope Francis advance arguments such as: *The First Vatican Council, "5. Source: Internet
Positions Sedevacantism owes its origins to the rejection of the theological and disciplinary changes implemented following the Second Vatican Council (1962–65). citation. Source: Internet