noun

• (Christianity) An itinerant or special preacher, especially a revivalist, who conducts services in different cities or locations, now often televised.
• (biblical) A writer of a gospel, especially the four New Testament Gospels (Matthew, Mark, Luke, and John), usually capitalized (Evangelist).
• (primitive Church) A person who first brought the gospel to a city or region.
• (Church of Jesus Christ of Latter-day Saints) A patriarch.
• (by extension) A person marked by extreme enthusiasm for or support of any cause, particularly with regard to religion.
• (technology) A person hired to promote a particular technology.
• (biblical) A writer of a gospel, especially the four New Testament Gospels (Matthew, Mark, Luke, and John), (also evangelist.)