堆积 Traditional 堆積 duī jī 🔊 to pile up HSK 7–9 + Review this word Meanings duī jī 堆積 to pile upto heapaccumulation Its characters 堆duīto pile upHSK 5积jīto amass; to accumulate; to store upHSK 7–9 Words with 堆积 堆积如山 duī jī rú shān to pile up like a mountain (idiom) 堆积木 duī jī mù to play with stacking blocks 最密堆积 zuì mì duī jī close-packing of spheres (math.)