Where does “Adventism” come from?

Adventism (English) comes from English Advent, from Latin adventus, from Latin adveniō, from Latin ad-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

Adventism (English): The Adventist Christian movement founded by William Miller in 19th-century United States

Definitions

  1. The Adventist Christian movement founded by William Miller in 19th-century United States

Ancestry of “Adventism”, step by step

Adventism traces back through two separate lines of ancestry.

via English Advent

StepLanguageWordMeaning
1EnglishAdventThe first or the expected second coming of Christ
2Latinadventusarrival, approach, advent; Advent
3Latinadveniōto come to, to arrive
4Latinad-to; usually prefixed to verbs, in which cases it...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems

Words derived from “Adventism

Every word from Proto-Indo-European h₁én
Adventism — Etymology, Origin & Word History | Etymology Explorer