Where does “coma” come from?

Coma comes from Ancient Greek κῶμα, from Ancient Greek κόμη, from Proto-Indo-European ḱumbʰ-.

coma (English): A state of unconsciousness from which one may not...

Definitions

coma traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Latin	coma	The hair of the head; foliage
2	Ancient Greek	κόμη	hair of the head
3	Latin	κομεω	to care for

Step	Language	Word	Meaning
1	Ancient Greek	κῶμα	deep sleep; lethargy; coma
2	Proto-Indo-European	ḱumbʰ-	—