- any Western Christian who is not an adherent of a Catholic, Anglican, or Eastern Church.
- an adherent of any of those Christian bodies that separated from the Church of Rome during the Reformation, or of any group descended from them, usually excluding the Anabaptists.
- (originally) any of the German princes who protested against the decision of the Diet of Speyer in 1529, which had denounced the Reformation.
- a person who protests.
- belonging or relating to Protestants or their religion.
- protesting.
- an adherent of Protestantism
- (as modifier)
