Where does “dessalement” come from?

dessalement (French) comes from French dessaler, from French dés-, from Middle French dés-, from Old French des-, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

dessalement (French): desalination

Definitions

desalination

Ancestry of “dessalement”, step by step

Step	Language	Word	Meaning
1	French	dessaler	to desalt
2	French	dés-	dis-, de-
3	Middle French	dés-	de-; dis
4	Old French	des-	de-; dis-
5	Latin	dis-	asunder, apart, in two; reversal, removal;...
6	Latin	calceus	shoe
7	Latin	calx	limestone; chalk; the finish line
8	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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