Where does “pachyptile” come from?

pachyptile (French) comes from Translingual Pachyptila, from Ancient Greek πᾰχῠ́ς, from Proto-Hellenic *pəkʰús.

pachyptile (French): having thick feathers

Definitions

Step	Language	Word	Meaning
1	Translingual	Pachyptila	—
2	Ancient Greek	πᾰχῠ́ς	thick
3	Proto-Hellenic	*pəkʰús	—

pachyptile — Etymology, Origin & Word History | Etymology Explorer