SECULARIZATION
secularization, secularisation
(noun) transfer of property from ecclesiastical to civil possession
secularization, secularisation
(noun) 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
Source: WordNet® 3.1
Etymology
Noun
secularization (countable and uncountable, plural secularizations)
The transformation of a society from close identification with religious values and institutions toward non-religious (or "irreligious") values and secular institutions.
The deconsecration of a church.
Source: Wiktionary
Sec`u*lar*i*za"tion, n. Etym: [Cf. F. sécularisation.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition