noun
transfusion
trans-FYOO-zhun/trænsˈfjuːʒn/
The delivery of blood into a recipient's circulation.
The patient receives a blood transfusion to replace lost blood.

Etymology
The components describe the act of pouring liquid across from one vessel to another. That general sense narrowed in medical use to the transfer of blood into another person's bloodstream.
In context
blood transfusion is performed in case the rbc's and hemoglobin count is low pain is controlled with analgesics
More examples
- Doctors check blood types before a transfusion.
- She needed two transfusions after the accident.
- A platelet transfusion helps his blood clot properly.
Forms
transfusion · transfusions
transfuse verb — To deliver blood into a recipient's bloodstream.
Similar words
- infusion
- Broader term for delivering fluids, including medication, into the bloodstream.