Refers to a death that is not from natural causes, often used in medical, legal, or forensic contexts. Contrasts with 自然死 (natural death).
See also: 自然死
The police began an investigation, suspecting the possibility of an unnatural death.
As a result of the autopsy, it was determined to be an unnatural death.
Compound of 異状 (abnormal, unusual) and 死 (death). The term is used in modern Japanese, particularly in medical and legal fields.