Where does “Infektiosität” come from?

Infektiosität (German) comes from German infektiös, from French infectieux, from French infection, from Old French infection, from Latin infectio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

Infektiosität (German): infectiousness

Definitions

infectiousness

Ancestry of “Infektiosität”, step by step

Step	Language	Word	Meaning
1	German	infektiös	infectious
2	French	infectieux	infectious
3	French	infection	infection; stench, stink
4	Old French	infection	infection
5	Latin	infectio	infection
6	Latin	-tiō	tion, -ation, -ing
7	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
8	Latin	dissertus	arranged, disposed; explained
9	Latin	disserere	second-person singular future passive indicative...
10	Latin	dis-	asunder, apart, in two; reversal, removal;...
11	Latin	calceus	shoe
12	Latin	calx	limestone; chalk; the finish line
13	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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