Where does “ortiga” come from?

ortiga (Old Portuguese) comes from Latin urtīca, from Latin -āria, from Latin -ārius, from Proto-Italic *-āzios.

Ancestry of “ortiga”, step by step

Step	Language	Word	Meaning
1	Latin	urtīca	—
2	Latin	-āria	—
3	Latin	-ārius	—
4	Proto-Italic	*-āzios	—

ortiga — Etymology, Origin & Word History | Etymology Explorer