mitochondrion
noun [ C ] biology specialized uk/ˌmaɪ.təˈkɒn.dri.ən/ us/ˌmaɪ.t̬oʊˈkɑːn.dri.ən/ mitochondria
线粒体（细胞质中的球状或长丝状细胞器，通过分解食物为细胞提供能量）
in a cell, a long or round piece found in the cytoplasm (= a substance surrounding the nucleus) that produces energy for the cell by breaking down food