Definition of "secularisation"

[E]ven if it were a fact that separate schools could only be equitably got rid of through the entire secularisation of our public school system, much as this end is to be desired, I could not consent to purchase it at such a cost.

1890 January, J. M. King, “Education: Not Secular nor Sectarian, but Religious”, in Archibald Macmurchy, editor, The Canada Educational Monthly and School Magazine, volume 12, Toronto: The Canada Educational Monthly Publishing Company Ltd., page 2