secularization

noun

1. (British, English, Oxford, US, countable, uncountable)The transformation of a society from close identification with religious values and institutions toward non-religious (or "irreligious") values and secular institutions.
2. (British, English, Oxford, US, countable, uncountable)The deconsecration of a church.
3. (British, English, Oxford, US, countable, uncountable)The act of becoming secular.

   “Wojtyla and Mazowiecki come from the same Krakow intellectual circles that advocated the secularization of politics and led the recent efforts for Polish-Jewish dialogue.”

   “[C]onservative Christian organizations have pushed back against what they describe as the secularization of Christmas.”

   “[H]e took advantage of several developments: the ongoing secularization of art and painting’s growing attention to actual people, and its rising status as portable market commodity.”