Where does “mauritan” come from?

mauritan (Romanian) comes from French Mauritanien, from French Mauritanie, from Latin Maurītānia, from Latin Mauritanus, from Latin maurus, from French maure, from Middle French moré, from Old French More — Creates adjectives from noun or verb stems.

mauritan (Romanian): Mauritanian

Definitions

Mauritanian

Ancestry of “mauritan”, step by step

Step	Language	Word	Meaning
1	French	Mauritanien	Mauritanian
2	French	Mauritanie	—
3	Latin	Maurītānia	—
4	Latin	Mauritanus	Mauritanian, of the Moors
5	Latin	maurus	Moorish, North African
6	French	maure	Moorish
7	Middle French	moré	Moor (person of Berber descent)
8	Old French	More	—
9	Latin	Maurus	Of or pertaining to the Moors; Moorish,...
10	Ancient Greek	Μαυρούσιος	an inhabitant of Mauretania; a Mauretanian
11	Ancient Greek	-ούσιος	forms relational adjectives: of or pertaining to
12	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
13	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek -ούσιος →