PROS'ELYTE, n. A new convert to some religion or religious sect, or to some particular opinion, system or party. Thus a Gentile converted to Judaism is a proselyte; a pagan converted to christianity is a proselyte; and we speak familiarly of proselytes to the theories of Brown, of Black, or of Lavoisier. The word primarily refers to converts to some religious creed. , v.t. To make a convert to some religion, or to some opinion or system.