Where does “trečiadienis” come from?
trečiadienis (Lithuanian) comes from Lithuanian trečias, from Proto-Balto-Slavic tretias, from Proto-Balto-Slavic tirtias, from Proto-Indo-European tr̥tyos, from Proto-Indo-European *tréyes.
trečiadienis (Lithuanian): Wednesday
Ancestry of “trečiadienis”, step by step