Where does “poly-” come from?

poly- (German) comes from Ancient Greek πολύς, from Ancient Greek πόρος, from Ancient Greek πείρω, from Proto-Hellenic *péryō.

poly- (German): poly-

Definitions

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

poly- — Etymology, Origin & Word History | Etymology Explorer