Where does “psikologia” come from?

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

psikologia (Esperanto): psychological

Definitions

psychological

Ancestry of “psikologia”, step by step

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

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