Where does “kalksten” come from?

kalksten (Danish) comes from Danish Sten, from Swedish Sten, from Old Swedish sten, from Old Norse Steinn, from Proto-Norse ᛊᛏᚨᛁᚾᚨᛉ, from Proto-Germanic stainaz, from Proto-Indo-European steyh₂-, from Proto-Indo-European steh₂- — to stand.

kalksten (Danish): limestone

Definitions

limestone

Ancestry of “kalksten”, step by step

kalksten traces back through two separate lines of ancestry.

via Danish Sten

Step	Language	Word	Meaning
1	Danish	Sten	stone
2	Swedish	Sten	a stone; a rock
3	Old Swedish	sten	stone
4	Old Norse	Steinn	a stone, boulder, rock
5	Proto-Norse	ᛊᛏᚨᛁᚾᚨᛉ	stone
6	Proto-Germanic	stainaz	stone
7	Proto-Indo-European	steyh₂-	to stiffen
8	Proto-Indo-European	steh₂-	to stand

via Danish kalk

Step	Language	Word	Meaning
1	Danish	kalk	lime; chalice
2	Latin	calx	limestone; chalk; the finish line
3	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Proto-Indo-European steh₂- →Every word from Proto-Indo-European steyh₂- →Every word from Proto-Germanic stainaz →