Where does “sao Thuỷ” come from?

sao Thuỷ (Vietnamese) comes from Vietnamese thuỷ, from Middle Chinese 水, from Proto-Sino-Tibetan lwi(j) — flow; stream.

sao Thuỷ (Vietnamese): Mercury

Definitions

  1. Mercury

Ancestry of “sao Thuỷ”, step by step

sao Thuỷ traces back through 3 separate lines of ancestry.

via Vietnamese thuỷ

StepLanguageWordMeaning
1Vietnamesethuỷwater; Water, one of the Wu Xing
2Middle Chinese水—
3Proto-Sino-Tibetanlwi(j)flow; stream

via Vietnamese sáo

StepLanguageWordMeaning
1Vietnamesesáoblackbird; starling; myna
2Proto-Vietick-raːwʔ—

via Chinese 水星

StepLanguageWordMeaning
1Chinese水星Mercury planet
Every word from Proto-Sino-Tibetan lwi(j) →Every word from Middle Chinese 水 →Every word from Vietnamese thuỷ →