扩散 Traditional 擴散 kuò sàn 🔊 to spread; to proliferate; to diffuse HSK 7–9 + Review this word Meanings kuò sàn 擴散 to spread; to proliferate; to diffuse Its characters 扩kuòto enlargeHSK 7–9散sànto scatterHSK 6 Words with 扩散 核扩散 hé kuò sàn nuclear proliferation 核不扩散 hé bù kuò sàn nuclear nonproliferation 扩散周知 kuò sàn zhōu zhī to let everyone know 气体扩散 qì tǐ kuò sàn gaseous diffusion