Protestantism
Concise Oxford English Dictionary © 2008 Oxford University Press:
Protestant /ˈprɒtɪst(ə)nt/
▶noun a member or follower of any of the Western Christian Churches that are separate from the Roman Catholic Church in accordance with the principles of the Reformation. ▶adjective relating to or belonging to any of the Protestant Churches.
– derivatives
Protestantism noun,
Protestantization (or Protestantisation) noun,
Protestantize (or Protestantise) verb.
Protestantism noun,
Protestantization (or Protestantisation) noun,
Protestantize (or Protestantise) verb.
'Protestantism' also found in these Oxford entries:

