Where does “tetraéderek” come from?

tetraéderek (Hungarian) comes from Hungarian tetraéder, from German Tetraeder, from Ancient Greek τετράεδρον, from Ancient Greek τετράεδρος, from Ancient Greek -ός, from Proto-Hellenic *-os, from Proto-Indo-European -ós — Creates agent nouns from verb stems, denoting...

Ancestry of “tetraéderek”, step by step

StepLanguageWordMeaning
1Hungariantetraédertetrahedron a polyhedron composed of four triangular faces, six straight edges, and four vertex corners
2GermanTetraedertetrahedron
3Ancient Greekτετράεδρονtriangle-based pyramid
4Ancient Greekτετράεδροςhaving four faces, tetrahedral
5Ancient Greek-όςForms agentive or patientive adjectives and nouns from the o-grade of a verbal root
6Proto-Hellenic*-os
7Proto-Indo-European-ósCreates agent nouns from verb stems, denoting...
Every word from Proto-Indo-European -ósEvery word from Ancient Greek -όςEvery word from Ancient Greek τετράεδρος