modern practices, trends, ideas, etc., or sympathy with any of these
an instance of this; a modern idiom, practice, or usage
any of several movements variously attempting to redefine Biblical and Christian dogma and traditional teachings in the light of modern science, historical research, etc.: condemned in the Roman Catholic Church in 1907 as a heresy
the early 20th-cent. movement or trend in which certain artists and writers, esp. those (as Joyce, T. S. Eliot, and Picasso) of the period between WWI and WWII, broke with established traditions and sought new modes of expression