Word: 膨胀 (péngzhàng) Traditional: 膨脹 膨胀 dictionary entry péngzhàng to expand; to inflate; to swell Full dictionary entry for 膨胀 Example sentences using 膨胀 2 sentences, showing page 1 of 1. 泡了水，豆子膨胀了一倍。 Pàole shuǐ, dòuzi péngzhàngle yíbèi. After soaking in water, the beans swelled to twice their size. 金属受热会膨胀。 Jīnshǔ shòurè huì péngzhàng. Metal expands when heated.