Where does “Đồng Nai” come from?

Đồng Nai (English) comes from Vietnamese Đồng Nai, from Vietnamese đồng, from Vietnamese đất, from Proto-Vietic tət.

Ancestry of “Đồng Nai”, step by step

StepLanguageWordMeaning
1VietnameseĐồng Nai—
2Vietnameseđồngfield; medium; sorcerer; copper
3Vietnameseđấtearth; soil; dirt; land
4Proto-Vietictət—
Every word from Proto-Vietic tət →Every word from Vietnamese đất →Every word from Vietnamese đồng →