Where does “scintillamento” come from?

scintillamento (Italian) comes from Italian scintillare, from Latin scintillō, from Latin scintilla, from Proto-Indo-European ski-nto-, from Proto-Indo-European skey-, from Proto-Indo-European sek- — to cut, cut off, sever.

scintillamento (Italian): scintillation, sparkle, coruscation, glitter

Definitions

scintillation, sparkle, coruscation, glitter

Ancestry of “scintillamento”, step by step

Step	Language	Word	Meaning
1	Italian	scintillare	To scintillate, sparkle, coruscate or glitter; to...
2	Latin	scintillō	to scintillate, sparkle
3	Latin	scintilla	spark; glimmer
4	Proto-Indo-European	ski-nto-	—
5	Proto-Indo-European	skey-	to split, to dissect
6	Proto-Indo-European	sek-	to cut, cut off, sever

Every word from Proto-Indo-European sek- →Every word from Proto-Indo-European skey- →Every word from Proto-Indo-European ski-nto- →