Adventism

noun

Ad·​vent·​ism ˈad-ˌven-ˌti-zəm 

1

: the doctrine that the second coming of Christ and the end of the world are near at hand

2

: the principles and practices of Seventh-Day Adventists

Adventist

əd-ˈven-tist 

ad-ˈven-

ˈad-ˌven-

adjective or noun

Word History

Etymology

advent + -ism

First Known Use

1874, in the meaning defined at sense 1