膨润土 Save Sign in to save words Traditional (Taiwan): 膨潤土 péngrùntǔ ㄆㄥˊ ㄖㄨㄣˋ ㄊㄨˇ bentonite (mineralogy) Character by character 膨(péng)swollen 润(rùn)moist 土(tǔ)surname Tu A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0