Definition of "fundamentalism" in English

noun

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

2. (by extension) A rigid conformity to any set of basic tenets.

3. (finance) The belief that fundamental financial quantities are the best predictor of the price of a financial instrument.

4. (theology) 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