Where does “oidium” come from?

oidium (Late Latin) comes from Ancient Greek ᾠόν, from Proto-Hellenic ōyyón, from Proto-Indo-European h₂ōwyóm, from Proto-Indo-European h₂éwis — bird.

Ancestry of “oidium”, step by step

StepLanguageWordMeaning
1Ancient Greekᾠόνegg; seed
2Proto-Hellenicōyyónegg
3Proto-Indo-Europeanh₂ōwyómegg
4Proto-Indo-Europeanh₂éwisbird

Words derived from “oidium

Every word from Proto-Indo-European h₂éwisEvery word from Proto-Indo-European h₂ōwyómEvery word from Proto-Hellenic ōyyón