Where does “þriðjudagur” come from?

þriðjudagur (Icelandic) comes from Icelandic þriðji, from Old Norse þriði, from Proto-Germanic þridjô, from Proto-Indo-European tretyós, from Proto-Indo-European tr̥tyós, from Proto-Indo-European tréyes — three.

þriðjudagur (Icelandic): Tuesday

Definitions

  1. Tuesday

Ancestry of “þriðjudagur”, step by step

þriðjudagur traces back through two separate lines of ancestry.

via Icelandic þriðji

StepLanguageWordMeaning
1Icelandicþriðjithird
2Old Norseþriðithird
3Proto-Germanicþridjôthird
4Proto-Indo-Europeantretyós—
5Proto-Indo-Europeantr̥tyósthird
6Proto-Indo-Europeantréyesthree

via Icelandic dagur

StepLanguageWordMeaning
1Icelandicdagura day
2Old Norsedagra day; days, times
3Proto-Germanicdagazday; name of the D-rune
4Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot
Every word from Proto-Indo-European tréyes →Every word from Proto-Indo-European tr̥tyós →Every word from Proto-Indo-European tretyós →