Where does “opipapavo” come from?

opipapavo (Esperanto) comes from Esperanto opio, from Latin opium, from Ancient Greek ὄπιον, from Ancient Greek ὀπός, from Proto-Indo-European sokʷós, from Proto-Indo-European sekʷ- — to follow; to see; to say.

Ancestry of “opipapavo”, step by step

opipapavo traces back through two separate lines of ancestry.

via Esperanto opio

Step	Language	Word	Meaning
1	Esperanto	opio	opium
2	Latin	opium	opium, poppy-juice
3	Ancient Greek	ὄπιον	poppy juice, opium
4	Ancient Greek	ὀπός	juice, vegetable/plant juice; fig-juice
5	Proto-Indo-European	sokʷós	juice of plants
6	Proto-Indo-European	sekʷ-	to follow; to see; to say

via Esperanto papavo

Step	Language	Word	Meaning
1	Esperanto	papavo	poppy
2	Latin	papāver	poppy

Every word from Proto-Indo-European sekʷ- →Every word from Proto-Indo-European sokʷós →Every word from Ancient Greek ὀπός →