Where does “ĉi-” come from?

ĉi- (Esperanto) comes from French chaque, from Middle French chasque, from Middle French chascun, from Old French chascun, from Vulgar Latin cascunum, from Latin catunum, from Ancient Greek κατά, from Ancient Greek καταστερίζω — to be/become dry; to burn, to glow; hearth.

ĉi- (Esperanto): each-, every-, all-

Definitions

each-, every-, all-

Ancestry of “ĉi-”, step by step

Step	Language	Word	Meaning
1	French	chaque	each; every
2	Middle French	chasque	each
3	Middle French	chascun	each one; every one; each; every
4	Old French	chascun	each one; every one; each; every
5	Vulgar Latin	cascunum	—
6	Latin	catunum	each, each one
7	Ancient Greek	κατά
8	Ancient Greek	καταστερίζω	to place among the stars; I put among the stars
9	Ancient Greek	ἀστήρ	a celestial body; illustrious person; starfish
10	Proto-Hellenic	astḗr	star
11	Proto-Indo-European	h₂stḗr	star
12	Proto-Indo-European	h₂eHs-	to be/become dry; to burn, to glow; hearth

Words derived from “ĉi-”

Every word from Proto-Indo-European h₂eHs- →