Where does “pneumonic” come from?

pneumonic (Romanian) comes from French pneumonique, from French pneumonie, from Ancient Greek πνευμονία, from Ancient Greek πνεύμων, from Ancient Greek πλεύμων, from Proto-Indo-European pléwmō, from Proto-Indo-European plew- — to fly, flow, run.

pneumonic (Romanian): pneumonic

Definitions

pneumonic

Ancestry of “pneumonic”, step by step

Step	Language	Word	Meaning
1	French	pneumonique	pneumonic
2	French	pneumonie	pneumonia
3	Ancient Greek	πνευμονία	a disease of the lungs
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 →