Where does “obnubilation” come from?

obnubilation (English) comes from Latin obnubilatio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus, from Latin calx — small stone, pebble; gravel, rubble.

obnubilation (English): The action of darkening or fact of being...

Definitions

The action of darkening or fact of being...

Ancestry of “obnubilation”, step by step

Step	Language	Word	Meaning
1	Latin	obnubilatio	the action of covering (something), as if with a cloud
2	Latin	-tiō	tion, -ation, -ing
3	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
4	Latin	dissertus	arranged, disposed; explained
5	Latin	disserere	second-person singular future passive indicative...
6	Latin	dis-	asunder, apart, in two; reversal, removal;...
7	Latin	calceus	shoe
8	Latin	calx	limestone; chalk; the finish line
9	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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