Where does “ĉielarko” come from?

ĉielarko (Esperanto) comes from Esperanto ĉielo, from Italian cielo, from Latin caelum, from Proto-Italic kailom, from Proto-Indo-European keh₂i-lom, from Proto-Indo-European keh₂i-.

ĉielarko (Esperanto): rainbow

Definitions

  1. rainbow

Ancestry of “ĉielarko”, step by step

ĉielarko traces back through two separate lines of ancestry.

via Esperanto ĉielo

StepLanguageWordMeaning
1Esperantoĉielosky; heaven
2Italiancielosky; heaven
3Latincaelumheaven; sky; atmosphere, climate, weather
4Proto-Italickailomsky
5Proto-Indo-Europeankeh₂i-lomwhole
6Proto-Indo-Europeankeh₂i-—

via Esperanto arko

StepLanguageWordMeaning
1Esperantoarkoarc; arch; bow
2Latinarcusarc, arch; bow; rainbow
3Latinsoliumseat, chair; throne, chair of state, official...
4Proto-Indo-Europeansodyom—
5Proto-Indo-Europeansḗd-to sit
Every word from Proto-Indo-European keh₂i- →Every word from Proto-Indo-European keh₂i-lom →Every word from Proto-Italic kailom →