protomitochondrionWiktionary 原文英美构词拆解protoproto-前缀mitochondrionmitochondrion词干proto-An early, primitive stage of development. · Original, older.词源说明From proto- + mitochondrion.释义名词noun1(biology) The ancestral bacterial endosymbiont from which all mitochondria are thought to be derived同族词相关词 1protomitochondrial