Where does “Biển Đông” come from?

Biển Đông (Vietnamese) comes from Vietnamese đồng, from Vietnamese đất, from Proto-Vietic tət.

Biển Đông (Vietnamese): South China Sea

Definitions

  1. South China Sea

Ancestry of “Biển Đông”, step by step

Biển Đông traces back through two separate lines of ancestry.

via Vietnamese đồng

StepLanguageWordMeaning
1Vietnameseđồngfield; medium; sorcerer; copper
2Vietnameseđấtearth; soil; dirt; land
3Proto-Vietictət

via Vietnamese biển

StepLanguageWordMeaning
1Vietnamesebiểnsea; ocean; sea; sign; signboard; placard; title...
Every word from Proto-Vietic tətEvery word from Vietnamese đấtEvery word from Vietnamese đồng