Convertism

Convertism can be a synonym of evangelism in the sense of them referring to the belief in the necessity of conversion; it can also mean the ideas of converts as distinguished from adepts. Convertism sometimes bastardises into a distortion of the faith, such as in so-called Fundamentalist Islam or Christianity. 
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Convertism --- the practice of converting people to a religion. — convertist, n. See also: Religion -Ologies & -Isms.tfd. "Copyright 2008 The Gale Group, Inc. All rights reserved."
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* Proselytisation; 
* Religious mania; Fideism; Evangelism
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