persistent vegetative state
noun [ U ] medical specialized uk/pəˌsɪs.tənt ˌvedʒ.ɪ.tə.tɪv ˈsteɪt/ us/pɚˌsɪs.tənt ˌvedʒ.ə.teɪ.t̬ɪv ˈsteɪt/
持续性植物状态，植物人状态
a medical condition in which a person's brain shows no sign of activity and they have to be kept alive by drugs and machines