Where does “flegmo” come from?

flegmo (Esperanto) comes from Latin phlegma, from Ancient Greek φλέγμα, from Ancient Greek φλέγω, from Proto-Indo-European bʰel-, from Proto-Indo-European bʰōl-.

flegmo (Esperanto): calmness, phlegm

Definitions

calmness, phlegm

Ancestry of “flegmo”, step by step

Step	Language	Word	Meaning
1	Latin	phlegma	phlegm
2	Ancient Greek	φλέγμα	flame, fire, heat; inflammation; phlegm, a cold...
3	Ancient Greek	φλέγω	I set on fire, burn, scorch; I kindle, arouse,...
4	Proto-Indo-European	bʰel-	to sound; to speak, roar, bark; shiny, white; to...
5	Proto-Indo-European	bʰōl-	—

Every word from Proto-Indo-European bʰōl- →Every word from Proto-Indo-European bʰel- →Every word from Ancient Greek φλέγω →