[f. CONVERT sb. + -ISM.] The system or practice of making converts.
1716. M. Davies, Ath. Brit., III. Diss. Drama, 23. [They] wanted encouragement as well as convertism to the Church of England.
1865. Union Rev., III. 57. The work of detraction on the one hand and convertism on the other.
1884. Ch. Times, 8 Feb., 102/2. Their convertism is done within a small area of the upper class.
