also: いたいあんちしょ
noun
A facility where bodies are temporarily kept, often in a hospital, disaster site, or funeral context.
災害現場の近くに遺体安置所が設けられた。
A mortuary was set up near the disaster site.
病院の地下に遺体安置所がある。
There is a morgue in the basement of the hospital.
霊安室 is a more common term for a hospital morgue or mortuary, while 遺体安置所 is often used in disaster or temporary contexts.
Compound of 遺体 (itai, 'corpse, remains'), 安置 (anchi, 'temporary placement'), and 所 (jo/sho, 'place').