Where does “mardi” come from?

mardi (Seychellois Creole) comes from French mardi, from Latin Martis dīēs, from Latin Mārs, from Proto-Indo-European -ḱos — -y, -ic.

mardi (Seychellois Creole): Tuesday

Definitions

Step	Language	Word	Meaning
1	French	mardi	Tuesday
2	Latin	Martis dīēs	—
3	Latin	Mārs	—
4	Proto-Indo-European	-ḱos	-y, -ic

mardi — Etymology, Origin & Word History | Etymology Explorer