稀土元素 xī tǔ yuán sù 🔊 rare earth element (chemistry) + Keep this word Meanings xī tǔ yuán sù rare earth element (chemistry) Its characters 稀xīsparse; scatteredHSK 7–9土tǔearthHSK 4元yuányuan (as written)HSK 1素sùraw silkHSK 7–9