noun
excessive bleeding; massive hemorrhage
Medical and emergency term for severe blood loss, often used in clinical reports, first aid, or news about accidents.
事故で出血多量により死亡した。
He died from excessive bleeding due to the accident.
出血多量の場合はすぐに救急車を呼んでください。
In case of massive bleeding, please call an ambulance immediately.
Compound of 出血 (bleeding) and 多量 (large amount). The exact historical derivation is uncertain, but the word follows standard Sino-Japanese compounding patterns.