transfusion
n. C / Un. the process of putting blood or other fluids directly into a person's body using a needle. Doctors use this when someone has lost a lot of blood or is very sick.
n. the medical procedure of transferring blood or blood components from one person into the circulatory system of another. Often involves the administration of plasma or saline solutions in broader clinical contexts.
The patient needs a blood transfusion immediately.
After the car accident, the surgical team performed an emergency transfusion to replace the blood the victim had lost.
Advances in screening technology have significantly reduced the risk of disease transmission during a transfusion, making the procedure a cornerstone of modern trauma medicine and oncology.
Borrowed from Latin transfūsiō.
Countable when referring to the specific medical event; uncountable when discussing the general practice or process.