Where does “pensjonat” come from?

pensjonat (Norwegian Bokmål) comes from Norwegian Bokmål pensjon, from Latin pēnsiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

pensjonat (Norwegian Bokmål): a boarding house, bed and breakfast, guest house, pension

Definitions

a boarding house, bed and breakfast, guest house, pension

Ancestry of “pensjonat”, step by step

pensjonat traces back through two separate lines of ancestry.

via Norwegian Bokmål pensjon

Step	Language	Word	Meaning
1	Norwegian Bokmål	pensjon	a pension; board and lodging
2	Latin	pēnsiō	payment
3	Latin	-tiō	tion, -ation, -ing
4	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
5	Latin	dissertus	arranged, disposed; explained
6	Latin	disserere	second-person singular future passive indicative...
7	Latin	dis-	asunder, apart, in two; reversal, removal;...
8	Latin	calceus	shoe
9	Latin	calx	limestone; chalk; the finish line
10	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via Norwegian Bokmål åt

Step	Language	Word	Meaning
1	Norwegian Bokmål	åt	simple past of ete
2	Old Norse	át	the act of eating; food; first-person singular...
3	Proto-Germanic	at	at, toward, to
4	Proto-Germanic	ētą	the act of eating; food
5	Proto-Germanic	etaną	to eat
6	Proto-Indo-European	h₁édti	to eat
7	Proto-Indo-European	h₁ed-	to eat

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