Where does “pluvarko” come from?

pluvarko (Ido) comes from Ido arko, from Russian а́рка, from Italian arco, from Latin arcus, from Latin solium, from Proto-Indo-European sodyom, from Proto-Indo-European sḗd- — to sit.

pluvarko (Ido): rainbow

Definitions

rainbow

Ancestry of “pluvarko”, step by step

pluvarko traces back through two separate lines of ancestry.

via Ido arko

Step	Language	Word	Meaning
1	Ido	arko	arch, arc; Alternative form of armarko
2	Russian	а́рка	arch, archway, arc
3	Italian	arco	bow; arc; arch
4	Latin	arcus	arc, arch; bow; rainbow
5	Latin	solium	seat, chair; throne, chair of state, official...
6	Proto-Indo-European	sodyom	—
7	Proto-Indo-European	sḗd-	to sit

via Ido pluvo

Step	Language	Word	Meaning
1	Ido	pluvo	rain
2	Esperanto	pluvo	rain
3	Latin	pluvia	rain; a shower; feminine nominative singular of...
4	Latin	pluvius	rainy, bringing rain; The inner court of a...
5	Latin	pluit	It rains; it is raining
6	Proto-Italic	plowō	—
7	Proto-Indo-European	pléweti	—

Every word from Proto-Indo-European sḗd- →