Where does “tra” come from?
tra (Esperanto) comes from Latin trāns, from Latin Padus, from Lepontic Bodincus, from Proto-Indo-European bʰudʰmḗn, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.
tra (Esperanto): through
Ancestry of “tra”, step by step