Where does “hornafall” come from?

hornafall (Icelandic) comes from Icelandic fall, from Old Norse fall, from Old Norse falla, from Proto-Germanic fallaną, from Proto-Indo-European pōl-, from Slovincian pól, from Proto-Slavic polъ, from Proto-Indo-European (s)pelH- — to split off, separate; to chop, to separate.

hornafall (Icelandic): trigonometric function

Definitions

  1. trigonometric function

Ancestry of “hornafall”, step by step

hornafall traces back through two separate lines of ancestry.

via Icelandic fall

StepLanguageWordMeaning
1Icelandicfallfall, drop; case; function
2Old Norsefall—
3Old Norsefallato fall
4Proto-Germanicfallanąto fall
5Proto-Indo-Europeanpōl-—
6Slovincianpólhalf
7Proto-Slavicpolъside, flank; half; member of a pair of options →...
8Proto-Indo-European(s)pelH-to split off, separate; to chop, to separate

via Icelandic horn

StepLanguageWordMeaning
1Icelandichornhorn; fin; corner
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
Every word from Proto-Indo-European (s)pelH- →Every word from Proto-Slavic polъ →Every word from Slovincian pól →