Where does “Mora” come from?

Mora comes from Latin mora, from Proto-Indo-European mere, from Proto-Indo-European (s)mer-.

Mora (English): A delay in bringing a claim; A unit used to...

Definitions

Step	Language	Word	Meaning
1	Latin	mora	delay, or any duration of time; hindrance
2	Proto-Indo-European	mere	to delay, hinder
3	Proto-Indo-European	(s)mer-	to fall into thinking, remember, care for; to...