(prot′is·tənt, prə·tes′-) noun
One who makes a protest. [<MF <L protestans, -antis, ppr. of protestari PROTEST]

(prot′is·tənt) noun
1. A member of one of those bodies of Christians that adhere to Protestantism, as opposed to Roman Catholicism: a use opposed by some Anglicans.
2. In the 17th century, a Lutheran or Anglican.
3. Originally, one of those German princes who, at the second Council of Spires, April 19, 1529, protested against the decree of the majority representing the Roman Catholic states which involved a virtual submission to the authority of the Roman Catholic Church.
—adjective Pertaining to Protestants or Protestantism.