Where does “armeringsjärn” come from?

armeringsjärn (Swedish) comes from Swedish järn, from Old Norse járn, from Proto-Germanic īsarną, from Proto-Celtic īsarnom, from Proto-Indo-European h₁ésh₂r̥ — blood.

armeringsjärn (Swedish): rebar

Definitions

rebar

Ancestry of “armeringsjärn”, step by step

armeringsjärn traces back through two separate lines of ancestry.

via Swedish järn

Step	Language	Word	Meaning
1	Swedish	järn	iron; certain sharp tools with a blade made of...
2	Old Norse	járn	iron
3	Proto-Germanic	īsarną	iron
4	Proto-Celtic	īsarnom	iron
5	Proto-Indo-European	h₁ésh₂r̥	blood

via Swedish armering

Step	Language	Word	Meaning
1	Swedish	armering	reinforcement (of a material)
2	Swedish	-ing	Used to form verbal nouns from verbs; -ing. See...
3	Old Swedish	-ing	Forms gerund nouns from verbs
4	Old Norse	-ing	Forms gerund nouns from verbs
5	Proto-Germanic	-ingō	-ing

Every word from Proto-Indo-European h₁ésh₂r̥ →Every word from Proto-Celtic īsarnom →Every word from Proto-Germanic īsarną →