Where does “orden” come from?

orden (Old Portuguese) comes from Latin ordinem, from Latin ordo, from Proto-Italic ord-on-, from Proto-Indo-European h₂er- — to fit, to fix, to put together.

Ancestry of “orden”, step by step

Step	Language	Word	Meaning
1	Latin	ordinem	first-person singular present active subjunctive...
2	Latin	ordo	a methodical series, arrangement, or order;...
3	Proto-Italic	ord-on-	row, order
4	Proto-Indo-European	h₂er-	to fit, to fix, to put together

Words derived from “orden”

orde

Every word from Proto-Indo-European h₂er- →Every word from Proto-Italic ord-on- →Every word from Latin ordo →