noun
detention for psychiatric evaluation; confinement pending expert assessment
Legal term under the Code of Criminal Procedure: a suspect may be held in a medical institution for a fixed period so that mental or physical examinations can be conducted.
裁判所は被告人の精神状態を調べるため、鑑定留置を認めた。
The court approved detention for psychiatric evaluation in order to examine the defendant's mental state.
鑑定留置の期間は、必要最小限でなければならない。
The period of confinement for expert assessment must be kept to the necessary minimum.