modernism

1. Modern or contemporary ideas, thought, practices, etc. (uncountable)
2. Anything that is characteristic of modernity. (countable)
3. Any of several styles of art, architecture, literature, philosophy, etc., that flourished in the 20th century. (countable, uncountable)
4. A religious movement in the early 20th century, condemned as heretical by Pope Pius X, which tried to reconcile Roman Catholic dogma with modern science and philosophy. (countable, uncountable)

Plural modernisms