Where does “persa” come from?

persa (Esperanto) comes from Esperanto perso, from Latin Persa, from Ancient Greek Περσίς, from Old Persian 𐎱𐎠𐎼𐎿, from Proto-Iranian párcuš, from Proto-Indo-Iranian párćuš, from Proto-Indo-European pérḱus — chest; rib.

persa (Esperanto): Persian

Definitions

Persian

Ancestry of “persa”, step by step

Step	Language	Word	Meaning
1	Esperanto	perso	Persian
2	Latin	Persa	A Persian
3	Ancient Greek	Περσίς	Persian; a female Persian
4	Old Persian	𐎱𐎠𐎼𐎿	a Persian
5	Proto-Iranian	párcuš	rib
6	Proto-Indo-Iranian	párćuš	rib
7	Proto-Indo-European	pérḱus	chest; rib

Every word from Proto-Indo-European pérḱus →