sec ‧ u ‧ lar ‧ is ‧ m /ˈsekjələrɪz ə m, ˈsekjʊlərɪz ə m/ BrE AmE noun [uncountable]
1 . a system of social organization that does not allow religion to influence the government, or the belief that religion should not influence a government
2 . the quality of behaving in a way that shows religion does not influence you:
the secularism of popular culture
—secularist noun [countable]