Where does “lúnis” come from?

lúnis (Extremaduran) comes from Latin Lūnae dīēs, from Latin dies Lūnae, from Ancient Greek σελήνη, from Ancient Greek Σέλας — light, brightness, the bright flame or blaze of fire.

lúnis (Extremaduran): Monday

Definitions

Monday

Ancestry of “lúnis”, step by step

Step	Language	Word	Meaning
1	Latin	Lūnae dīēs	—
2	Latin	dies Lūnae	Monday
3	Ancient Greek	σελήνη	moon; month; a moon-shaped cake
4	Ancient Greek	Σέλας	light, brightness, the bright flame or blaze of fire

Every word from Ancient Greek Σέλας →Every word from Ancient Greek σελήνη →Every word from Latin dies Lūnae →