Where does “psikologio” come from?

psikologio (Esperanto) comes from Esperanto psiko, from Latin psychē, from Ancient Greek Ψυχή, from Ancient Greek δῆλος, from Proto-Indo-European dyew- — to be bright; sky, heaven.

psikologio (Esperanto): psychology

Definitions

psychology

Ancestry of “psikologio”, step by step

Step	Language	Word	Meaning
1	Esperanto	psiko	psyche
2	Latin	psychē	—
3	Ancient Greek	Ψυχή	Psyche
4	Ancient Greek	δῆλος	visible; conspicuous; manifest
5	Proto-Indo-European	dyew-	to be bright; sky, heaven

Words derived from “psikologio”

psikologia
psiĥologio

Every word from Proto-Indo-European dyew- →Every word from Ancient Greek δῆλος →Every word from Ancient Greek Ψυχή →