Where does “chlorum” come from?

chlorum (New Latin) comes from Ancient Greek χλωρός, from Proto-Indo-European ghlo-.

chlorum (New Latin): chlorine

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	χλωρός	greenish-yellow, pale green; pale, pallid; fresh,...
2	Proto-Indo-European	ghlo-	—

chlorum — Etymology, Origin & Word History | Etymology Explorer