Definition of "Adventist"

One who believes in the Second Advent (usually known as the Second Coming) of Jesus; an advocate of Adventism.  examples

(short form) A member of the Seventh-day Adventist Church.  examples

Relating to believers in the Second Advent of Jesus; relating to Adventism.  examples

(short form) Relating to Seventh-day Adventism / the Seventh-day Adventist Church.  examples