Where does “gangrenous” come from?

Gangrenous derives from English gangrene plus the Latin suffix -osus, tracing through French gangrène and Latin gangraena to Ancient Greek γράω meaning to gnaw.

gangrenous (English): Indicative of or afflicted with gangrene

Definitions

Indicative of or afflicted with gangrene

Ancestry of “gangrenous”, step by step

Step	Language	Word	Meaning
1	English	gangrene	The necrosis or rotting of flesh, usually caused...
2	French	gangrène	gangrene; first-person singular present...
3	Latin	gangraena	gangrene
4	Ancient Greek	γάγγραινα	gangrene
5	Ancient Greek	γράω	to gnaw, eat
6	Proto-Indo-European	*gres-	—

Words derived from “gangrenous”

nongangrenous
gangrenously

Every word from Proto-Indo-European *gres- →Every word from Ancient Greek γράω →Every word from Ancient Greek γάγγραινα →