(n)the activity of changing something (art or education or society or morality etc.) so it is no longer under the control or influence of religion, Syn.secularisation
n. [ Cf. F. sécularisation. ] The act of rendering secular, or the state of being rendered secular; conversion from regular or monastic to secular; conversion from religious to lay or secular possession and uses; as, the secularization of church property. [ 1913 Webster ]