eindexextraembryonic./ek-struh-em-bree-on-ik/US // ˌɛk strəˌɛm briˈɒn ɪk //胚胎外,胚胎外的,胚外,胚胎外骨骼Definitionsadj.adjective · 形容词1.›situated outside the embryo.›pertaining to structures outside the embryo.Level 5More words in e →