Where does “arcoíris” come from?

arcoíris (Spanish) comes from Spanish arco, from Latin arcus, from Latin solium, from Proto-Indo-European sodyom, from Proto-Indo-European sḗd- — to sit.

arcoíris (Spanish): rainbow

Definitions

  1. rainbow

Ancestry of “arcoíris”, step by step

arcoíris traces back through two separate lines of ancestry.

via Spanish arco

StepLanguageWordMeaning
1Spanisharcobow; arc; arch
2Latinarcusarc, arch; bow; rainbow
3Latinsoliumseat, chair; throne, chair of state, official...
4Proto-Indo-Europeansodyom—
5Proto-Indo-Europeansḗd-to sit

via Spanish iris

StepLanguageWordMeaning
1Spanishirisiris
2LatinĪris—
3Ancient GreekἾριςIris
4Ancient GreekἼρις—
Every word from Proto-Indo-European sḗd- →Every word from Proto-Indo-European sodyom →Every word from Latin solium →