Where does “disgréger” come from?

disgréger (French) comes from Middle French disgreger, from Latin disgregō, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

disgréger (French): "(opt.) (l.u.) to scatter, to separate, to disperse"

Definitions

"(opt.) (l.u.) to scatter, to separate, to disperse"

Ancestry of “disgréger”, step by step

Step	Language	Word	Meaning
1	Middle French	disgreger	—
2	Latin	disgregō	to separate, divide
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

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