pros·e·ly·tize 
(prŏsə-lĭ-tīz′)
(prŏsə-lĭ-tīz′)v. pros·e·ly·tized, pros·e·ly·tiz·ing, pros·e·ly·tiz·es
v.intr.
1. To attempt to convert someone to one's own religious faith.
2. To attempt to persuade someone to join one's own political party or to espouse one's doctrine.
v.tr.
To convert (a person) from one belief, doctrine, cause, or faith to another.
pros′e·ly·ti·zation (-tĭ-zāshən) n.
prose·ly·tiz′er n.