Where does “третииникъ” come from?

третииникъ (Old East Slavic) comes from Old East Slavic третии, from Proto-Slavic tretь, from Proto-Balto-Slavic tretias, from Proto-Balto-Slavic tirtias, from Proto-Indo-European tr̥tyos, from Proto-Indo-European *tréyes.

третииникъ (Old East Slavic): Wednesday

Definitions

  1. Wednesday

Ancestry of “третииникъ”, step by step

StepLanguageWordMeaning
1Old East Slavicтретииthird
2Proto-Slavictretьthird
3Proto-Balto-Slavictretias—
4Proto-Balto-Slavictirtias—
5Proto-Indo-Europeantr̥tyos—
6Proto-Indo-European*tréyes—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Indo-European tr̥tyos →Every word from Proto-Balto-Slavic tirtias →