PROSELYTISM
Source: 566, 567
proselytism. Proselytism, n. the practice of making converts
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Pros″e‐ly‐tism (?), n. [[Cf. F. prosélytisme.]] 1. 1. The act or practice of proselyting; the making of converts to a religion or a religious sect, or to any opinion, system, or party.
They were possessed of a spirit of proselytism in the most fanatical degree. Burke. 2. 2. Conversion to a religion, system, or party.