Where does “protoprotestant” come from?

protoprotestant (English) comes from English Protestant, from German protestant, from French protestant, from French protester, from Latin prōtestor, from Latin testor, from Latin testis, from Latin terstis — to stand.

protoprotestant (English): Relating to a prototypical form of the Protestant religion

Definitions

  1. Relating to a prototypical form of the Protestant religion

Ancestry of “protoprotestant”, step by step

protoprotestant traces back through two separate lines of ancestry.

via English Protestant

StepLanguageWordMeaning
1EnglishProtestantA member of any of several Christian...
2GermanprotestantProtestant person
3FrenchprotestantProtestant; present participle of protester
4Frenchprotesterto protest; to object
5Latinprōtestorto testify, bear witness, attest
6LatintestorI am witness, testify, attest; I make a will
7Latintestiswitness; one who testifies or attests; testicle
8Latinterstis
9Latintrīstissad, unhappy, melancholy, morose
10Proto-Indo-Europeantristh₂sa third party standing, after the two parties to...
11Proto-Indo-Europeansteh₂-to stand

via English proto

StepLanguageWordMeaning
1EnglishprotoPrototypical; preceding the proper beginning of...
2Englishproto-first; most recent common ancestor of; Relating...
3Ancient Greekπρωτο-first, primary
4Ancient Greekπρῶτοςfirst; earliest; foremost, most prominent
5Byzantine Greekνοτάριος
6Latinnotariusnotary; clerk, secretary; writer of shorthand;...
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Indo-European steh₂-