[ 'prɒsɪlʌɪt ]
■ noun a convert from one opinion, religion, or party to another.
↘a person who has converted to Judaism.
■ verb US term for proselytize .
Derivatives
proselytism -lɪtɪz(ə)m noun
Origin
ME: via late L. from Gk prosēluthos 'stranger, convert', from prosēluth- , proserkhesthai 'approach'.