Where does “deseleccionar” come from?

deseleccionar (Spanish) comes from Spanish seleccionar, from Spanish selección, from Latin sēlēctiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

deseleccionar (Spanish): to unselect to cancel a previous selection, especially by removing a mark from a tick box

Definitions

to unselect to cancel a previous selection, especially by removing a mark from a tick box

Ancestry of “deseleccionar”, step by step

Step	Language	Word	Meaning
1	Spanish	seleccionar	to select
2	Spanish	selección	selection; choice; national sports team
3	Latin	sēlēctiō	The act of choosing out or selecting; selection, choice
4	Latin	-tiō	tion, -ation, -ing
5	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
6	Latin	dissertus	arranged, disposed; explained
7	Latin	disserere	second-person singular future passive indicative...
8	Latin	dis-	asunder, apart, in two; reversal, removal;...
9	Latin	calceus	shoe
10	Latin	calx	limestone; chalk; the finish line
11	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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