<p><strong>Noun</strong></p><ul><li>any Western Christian who is not an adherent of a Catholic, Anglican, or Eastern Church.</li><li>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.</li><li>(originally) any of the German princes who protested against the decision of the Diet of Speyer in 1529, which had denounced the Reformation.</li><li>protestant, a person who protests.</li></ul><p><strong>Adjective</strong></p><ul><li>belonging or relating to Protestants or their religion.</li><li>protesting.</li></ul>