Where does “fyrhörning” come from?

fyrhörning (Swedish) comes from Swedish hörn, from Old Norse horn, from Proto-Norse ᚺᛟᚱᚾᚨ, from Proto-Germanic hurną, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥-, from Proto-Indo-European ker- — army.

fyrhörning (Swedish): quadrilateral

Definitions

  1. quadrilateral

Ancestry of “fyrhörning”, step by step

fyrhörning traces back through two separate lines of ancestry.

via Swedish hörn

StepLanguageWordMeaning
1Swedishhörna corner; the point where two converging lines...
2Old Norsehornhorn; corner; angle
3Proto-Norseᚺᛟᚱᚾᚨhorn
4Proto-Germanichurnąhorn
5Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
6Proto-Indo-Europeankr̥-to turn, to bend
7Proto-Indo-Europeanker-army

via Swedish fyra

StepLanguageWordMeaning
1Swedishfyrafour; four; the digit "4"; fourth-grader; pupil...
2Old Swedishfiurirfour
3Old Norsefjórirfour
4Proto-Germanicfedwōrfour
5Proto-Indo-Europeankʷetwóresfour
6Proto-Indo-Europeankʷe-and
Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-