Where does “գանգրենա” come from?

գանգրենա (Armenian) comes from Russian гангре́на, from Ancient Greek γάγγραινα, from Ancient Greek γράω, from Proto-Indo-European *gres-.

գանգրենա (Armenian): gangrene

Definitions

Step	Language	Word	Meaning
1	Russian	гангре́на	—
2	Ancient Greek	γάγγραινα	gangrene
3	Ancient Greek	γράω	to gnaw, eat
4	Proto-Indo-European	*gres-	—

գանգրենա — Etymology, Origin & Word History | Etymology Explorer