What is the meaning of Fundamentalism?

The tendency to reduce a religion to its most fundamental tenets, based on strict interpretation of core texts.

A rigid conformity to any set of basic tenets.

The belief that fundamental financial quantities are the best predictor of the price of a financial instrument.

A Christian movement that started in the late 19th and early 20th centuries among British and American Protestants, which emphasizes literal interpretation of the Bible, and came up as a reaction to liberal theology and cultural modernism

fundamentalism

fundamentalism

Source: wiktionary.org