Where does “ポリネシア” come from?

ポリネシア (Japanese) comes from English Polynesia, from French Polynésie, from Ancient Greek πολύς, from Ancient Greek πόρος, from Ancient Greek πείρω, from Proto-Hellenic *péryō.

Ancestry of “ポリネシア”, step by step

Step	Language	Word	Meaning
1	English	Polynesia	—
2	French	Polynésie	—
3	Ancient Greek	πολύς	many, a lot of; neuter πολύ or πολλά as...
4	Ancient Greek	πόρος	a means of passage, passageway, way, opening;...
5	Ancient Greek	πείρω	I pierce, run through; I cleave through
6	Proto-Hellenic	*péryō	—

Words derived from “ポリネシア”

フランス領ポリネシア

Every word from Proto-Hellenic *péryō →Every word from Ancient Greek πείρω →Every word from Ancient Greek πόρος →