noun, noun which may take the genitive case particle 'no'
massive bleeding; hemorrhaging
Medical and general term for losing a large amount of blood. Often used in emergency contexts.
事故で大量出血し、緊急搬送された。
He suffered massive bleeding in the accident and was rushed to the hospital.
大量出血のため輸血が必要になった。
A blood transfusion became necessary due to the massive bleeding.
出血 is general bleeding, while 大量出血 specifically means a large amount of blood loss.
Compound of 大量 (large quantity) and 出血 (bleeding).