Where does “dispersioun” come from?

dispersioun (Middle English) comes from Old French dispersion, from Latin dispertio, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “dispersioun”, step by step

Step	Language	Word	Meaning
1	Old French	dispersion	—
2	Latin	dispertio	I divide; I distribute; I assign
3	Latin	dis-	asunder, apart, in two; reversal, removal;...
4	Latin	calceus	shoe
5	Latin	calx	limestone; chalk; the finish line
6	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Words derived from “dispersioun”

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin calx →