Missionary
A missionary is one who is sent on a mission, especially one sent to do
religious or charitable work in a territory or foreign country. The Latin root
from which the word "missionary" is derived is equivalent to the Greek word
apostolos (^ _[Strong's
#652]_^),
meaning "one sent forth", from which we get "apostle". It has been defined as one
who attempts to persuade or convert others to a particular faith (or set of beliefs)
[1]; often an evangelist
or other representative of a religious community who works among those outside of
that community.
The term is most commonly used to refer to Christian missionaries, although it can generally apply to proselytizing of any creed or ideology.