modernism

Short definition from Wiktionary

Noun

1. 1
   Modern or contemporary ideas, thought, practices, etc.
2. 2
   Anything that is characteristic of modernity.
3. 3
   Any of several styles of art, architecture, literature, philosophy, etc., that flourished in the 20th century.
4. 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.