Where does “pneumotorax” come from?

pneumotorax (Romanian) comes from French pneumothorax, 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.

pneumotorax (Romanian): pneumothorax

Definitions

pneumothorax

Ancestry of “pneumotorax”, step by step

Step	Language	Word	Meaning
1	French	pneumothorax	pneumothorax
2	French	pneumo-	pneumo
3	Ancient Greek	πνεύμων	lung; kind of a mollusk
4	Ancient Greek	πλεύμων	lung
5	Proto-Indo-European	pléwmō	lung, floater
6	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 →