Where does “porosus” come from?

porosus (Latin) comes from Latin porus, from Ancient Greek πόρος, from Ancient Greek πείρω, from Proto-Hellenic *péryō.

porosus (Latin): porous

Definitions

Step	Language	Word	Meaning
1	Latin	porus	pore, passage in the body; tufa
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	—

porosus — Etymology, Origin & Word History | Etymology Explorer