Where does “třeťák” come from?

třeťák (Czech) comes from Czech třetí, from Proto-Slavic tretь, from Proto-Balto-Slavic tretias, from Proto-Balto-Slavic tirtias, from Proto-Indo-European tr̥tyos, from Proto-Indo-European *tréyes.

třeťák (Czech): a third grader

Definitions

  1. a third grader

Ancestry of “třeťák”, step by step

StepLanguageWordMeaning
1Czechtřetíthird
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 →