Where does “ersatzism” come from?

ersatzism (English) comes from English ersatz, from German Ersatz, from German ersetzen, from Middle High German ersetzen, from Old High German irsezzen, from Proto-Germanic *uʀsattjan, from Proto-Germanic *sattjan, from Proto-Germanic satjaną — Creates transitive imperfective verbs from roots.

ersatzism (English): The doctrine that only one concrete world exists,...

Definitions

  1. The doctrine that only one concrete world exists,...

Ancestry of “ersatzism”, step by step

ersatzism traces back through two separate lines of ancestry.

via English ersatz

StepLanguageWordMeaning
1Englishersatzmade in imitation; artificial, especially of a...
2GermanErsatzreplacement, substitute; compensation
3Germanersetzento replace, to substitute
4Middle High Germanersetzen
5Old High Germanirsezzen
6Proto-Germanic*uʀsattjan
7Proto-Germanic*sattjan
8Proto-Germanicsatjanąto set, to place down
9Proto-Indo-Europeansodéyetito set, to seat, to cause to sit
10Proto-Indo-European-éyetiForms causative imperfective verbs from roots;...
11Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

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
Every word from Proto-Indo-European -yetiEvery word from Proto-Indo-European -éyetiEvery word from Proto-Indo-European sodéyeti