Where does “heteroousianism” come from?

heteroousianism (English) comes from English heteroousian, from Ancient Greek ἑτεροουσιος, from Ancient Greek οὐσία, from Ancient Greek εἰμί, from Proto-Hellenic ehmi, from Proto-Indo-European h₁ésmi, from Proto-Indo-European h₁ēs- — to be.

heteroousianism (English): The belief that the first and second persons of the Trinity have different essence or substance

Definitions

  1. The belief that the first and second persons of the Trinity have different essence or substance

Ancestry of “heteroousianism”, step by step

heteroousianism traces back through two separate lines of ancestry.

via English heteroousian

StepLanguageWordMeaning
1Englishheteroousianhaving different essence or substance, especially...
2Ancient Greekἑτεροουσιοςof a different nature
3Ancient Greekοὐσίαthat which is one's own, one's substance,...
4Ancient GreekεἰμίTo be, exist; live; To be; it is possible
5Proto-Hellenicehmito be
6Proto-Indo-Europeanh₁ésmifirst-person singular present indicative of...
7Proto-Indo-Europeanh₁ēs-to be

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 h₁ēs-Every word from Proto-Indo-European h₁ésmiEvery word from Proto-Hellenic ehmi