Where does “psicoplegico” come from?

psicoplegico (Italian) comes from Italian psicoplegia, from Italian psico-, from Ancient Greek Ψυχή, from Ancient Greek δῆλος, from Proto-Indo-European dyew- — to be bright; sky, heaven.

Ancestry of “psicoplegico”, step by step

Step	Language	Word	Meaning
1	Italian	psicoplegia	psychoplegia
2	Italian	psico-	psycho-
3	Ancient Greek	Ψυχή	Psyche
4	Ancient Greek	δῆλος	visible; conspicuous; manifest
5	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 →