脑死 nǎosǐ brain death Origin Definitions Defs Strokes Stroke Words Sentences Sents 脑死亡 nǎosǐwáng brain death The permanent loss of all brain functions, used as a legal and medical indicator of death; specifically involves deep coma, absence of reflexes, and cessation of breathing.大脑死亡 dànǎosǐwáng brain death brain death; the condition of being brain dead