Where does “parasurtenseur” come from?

parasurtenseur (French) comes from French surtension, from French tension, from Middle French tension, from Latin tensiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

parasurtenseur (French): surge protector

Definitions

surge protector

Ancestry of “parasurtenseur”, step by step

Step	Language	Word	Meaning
1	French	surtension	overvoltage; surge
2	French	tension	tension; blood pressure; voltage
3	Middle French	tension	—
4	Latin	tensiō	stretching, stretching out, extension
5	Latin	-tiō	tion, -ation, -ing
6	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
7	Latin	dissertus	arranged, disposed; explained
8	Latin	disserere	second-person singular future passive indicative...
9	Latin	dis-	asunder, apart, in two; reversal, removal;...
10	Latin	calceus	shoe
11	Latin	calx	limestone; chalk; the finish line
12	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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