Where does “pneumococic” come from?

pneumococic (Romanian) comes from Romanian pneumococ, from French pneumocoque, from French pneumo-, from Ancient Greek πνεύμων, from Ancient Greek πλεύμων, from Proto-Indo-European pléwmō, from Proto-Indo-European plew- — to fly, flow, run.

pneumococic (Romanian): pneumococcal

Definitions

pneumococcal

Ancestry of “pneumococic”, step by step

Step	Language	Word	Meaning
1	Romanian	pneumococ	pneumococcus
2	French	pneumocoque	pneumococcus
3	French	pneumo-	pneumo
4	Ancient Greek	πνεύμων	lung; kind of a mollusk
5	Ancient Greek	πλεύμων	lung
6	Proto-Indo-European	pléwmō	lung, floater
7	Proto-Indo-European	plew-	to fly, flow, run

Every word from Proto-Indo-European plew- →Every word from Proto-Indo-European pléwmō →Every word from Ancient Greek πλεύμων →