Where does “IVA-helikopter” come from?

IVA-helikopter (Swedish) comes from Swedish helikopter, from French hélicoptère, from Ancient Greek ἕλιξ, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Ancestry of “IVA-helikopter”, step by step

IVA-helikopter traces back through two separate lines of ancestry.

via Swedish helikopter

StepLanguageWordMeaning
1Swedishhelikoptera helicopter
2Frenchhélicoptèrehelicopter
3Ancient GreekἕλιξAnything twisted, winding, or spiral; The tendril...
4Ancient Greekπτερόνfeather; wing; Any winged creature
5Proto-Indo-Europeanpéth₂r̥wing; feather
6Proto-Indo-Europeanpeth₂-to spread out; to fly

via Swedish IVA

StepLanguageWordMeaning
1SwedishIVA
Every word from Proto-Indo-European peth₂-Every word from Proto-Indo-European péth₂r̥Every word from Ancient Greek πτερόν