n. 1. A system of beliefs based on the interpretation of every word in the Bible, both old and new testaments, as literal truth. It is primarily held by a branch of American Protestants. [ WordNet 1.5 ]
2. The beliefs or practises based on a rigid adherence to some traditional doctrine; extreme conservatism; as, Moslem fundamentalism; the political fundamentalism of the Christian right. [ PJC ]