Where does “fluidissimo” come from?

fluidissimo (Italian) comes from Italian fluido, from Latin fluidus, from Latin fluō, from Proto-Indo-European bʰléh₁-, from Proto-Indo-European bʰel-, from Proto-Indo-European bʰōl-.

Ancestry of “fluidissimo”, step by step

Step	Language	Word	Meaning
1	Italian	fluido	fluid
2	Latin	fluidus	liquid, fluid, flowing; soft, feeble, moist
3	Latin	fluō	to flow, stream, pour
4	Proto-Indo-European	bʰléh₁-	to bleat
5	Proto-Indo-European	bʰel-	to sound; to speak, roar, bark; shiny, white; to...
6	Proto-Indo-European	bʰōl-	—

Every word from Proto-Indo-European bʰōl- →Every word from Proto-Indo-European bʰel- →Every word from Proto-Indo-European bʰléh₁- →