Where does “destourbance” come from?

destourbance (Old French) comes from Old French destourber, from Latin disturbo, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “destourbance”, step by step

Step	Language	Word	Meaning
1	Old French	destourber	disturb
2	Latin	disturbo	I disturb; I demolish, destroy
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 “destourbance”

disturbance
nondisturbance
antidisturbance
indisturbance
predisturbance
redisturbance
undisturbance
disturbanza

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