Where does “tensioner” come from?

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

tensioner (English): Any device that maintains or applies tension

Definitions

Any device that maintains or applies tension

Ancestry of “tensioner”, step by step

Step	Language	Word	Meaning
1	English	tension	The condition of being held in a state between...
2	Middle French	tension	—
3	Latin	tensiō	stretching, stretching out, extension
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- →