Where does “ortiga” come from?

ortiga (Old Portuguese) comes from Latin urtīca, from Latin -āria, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “ortiga”, step by step

Step	Language	Word	Meaning
1	Latin	urtīca	stinging nettle
2	Latin	-āria	used to form feminine counterparts of masculine agent nouns in
3	Latin	-ārius	er
4	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Words derived from “ortiga”

urtiga
ortiga

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Latin -āria →