Where does “πτερύγιο” come from?

πτερύγιο (Greek) comes from Ancient Greek πτερύγιον, from Ancient Greek πτέρυξ, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

πτερύγιο (Greek): fin, flipper; mechanical part resembling a fin;...

Definitions

fin, flipper; mechanical part resembling a fin;...

Ancestry of “πτερύγιο”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	πτερύγιον	wing, fin
2	Ancient Greek	πτέρυξ	wing; feathers; fins
3	Ancient Greek	πτερόν	feather; wing; Any winged creature
4	Proto-Indo-European	péth₂r̥	wing; feather
5	Proto-Indo-European	peth₂-	to spread out; to fly

Words derived from “πτερύγιο”

πτερυγίων
υδροπτέρυγο

Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Ancient Greek πτερόν →