- a religious movement characterized by a strict belief in the literal interpretation of religious texts, especially within American Protestantism and Islam.
- the beliefs held by those in this movement.
- strict adherence to any set of basic ideas or principles: the fundamentalism of the extreme conservatives.
- (esp among certain Protestant sects) the belief that every word of the Bible is divinely inspired and therefore true
- a movement favouring strict observance of the teachings of the Koran and Islamic law
- strict adherence to the fundamental principles of any set of beliefs