blood transfusion

noun

1. the injection of blood from one person or animal into the bloodstream of another.

transfusion, blood

1. The injection of blood received from a donor into the bloodstream of another individual having a compatible blood type. A person may need a blood transfusion if a great deal of blood has been lost through surgery or trauma.

If the blood supply is contaminated, diseases such as hepatitis and AIDS can be passed to someone who receives a blood transfusion.

Word History and Origins

Origin of blood transfusion¹

First recorded in 1875–80