Where does “chiral” come from?

chiral (German) comes from Ancient Greek χείρ, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

chiral (German): chiral

Definitions

chiral

Ancestry of “chiral”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	χείρ	hand
2	Ancient Greek	πτερόν	feather; wing; Any winged creature
3	Proto-Indo-European	péth₂r̥	wing; feather
4	Proto-Indo-European	peth₂-	to spread out; to fly

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