trans·​fu·​sion | \tran(t)s-ˈfyü-zhən \

Definition of transfusion 

1 : an act, process, or instance of transfusing especially : the process of transfusing fluid (such as blood) into a vein or artery

2 : something transfused

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Other Words from transfusion

transfusional \ tran(t)s-​ˈfyüzh-​nəl , -​ˈfyü-​zhə-​nᵊl \ adjective

Did You Know?

When blood transfusions were first attempted by Europeans in the early 1600s, they were met with skepticism, since the established practice was to bleed patients, not transfuse them with blood. Some patients were transfused with animal blood, and so many died as a result that by 1700 transfusions had been widely outlawed. Not until 1900 were the major blood groups (A, B, AB, and O) recognized, making transfusions safe and effective.

Examples of transfusion in a Sentence

Without a transfusion her chances of survival were slim.

Recent Examples on the Web

But Jehovah's Witnesses don't take blood transfusions, which are sometimes necessary for organ recovery surgery. Will Higgins, Indianapolis Star, "To save lives, they must ask grieving families a difficult question," 12 Apr. 2018 This type of hepatitis used to be spread primarily through blood transfusions and transplanted organs from infected donors, but screening begun in the early 1990s virtually eliminated that problem. USA TODAY, "5 kinds of hepatitis all attack one organ in the body," 29 May 2018 On Monday night, Celgene and Acceleron said their partnered drug luspatercept met all primary and secondary endpoints in a Phase 3 clinical trial of patients with transfusion-dependent beta thalassemia. Adam Feuerstein, STAT, "Celgene is perking up. Here’s what needs to happen for the momentum to continue," 10 July 2018 Liver disease, likely stemming from a long-ago blood transfusion, appeared suddenly, leaving Sharon with only six weeks to live after the diagnosis., "Sharon E. Torrant," 8 July 2018 Robotic surgery offers fewer blood transfusions, a shorter hospital stay and quicker recovery. WSJ, "Is Robotic Prostate Surgery Better Than Traditional Surgery?," 24 June 2018 Clinic visits, emergency situations, antibiotics, staying in the hospital, blood transfusions, anesthesia, surgery. Amy Schwabe, Milwaukee Journal Sentinel, "You'd never know this happy-go-lucky 2-year-old has sickle cell anemia. But it's always on her mom's mind.," 11 June 2018 Acceleron Pharma said Thursday that its experimental drug luspatercept significantly reduced the need for blood transfusions in patients with the blood disease myelodysplastic syndrome, meeting the primary goal of a Phase 3 clinical trial. Adam Feuerstein, STAT, "Acceleron blood disease drug hits goal in pivotal clinical trial," 28 June 2018 Studies, most recently one done by an Indiana University-Purdue University Indianapolis professor, have shown that these programs do reduce the spread of HIV and hepatitis C. Both hepatitis B and C can spread through a blood transfusion. Shari Rudavsky, Indianapolis Star, "Hepatitis outbreaks: 10 things to know about the liver disease," 15 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'transfusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of transfusion

1578, in the meaning defined at sense 1

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Last Updated

19 Oct 2018

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Time Traveler for transfusion

The first known use of transfusion was in 1578

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More Definitions for transfusion


trans·​fu·​sion | \trans-ˈfyü-zhən \

Kids Definition of transfusion

1 : the process of passing a fluid (as blood) into a vein of a person or animal

2 : the act of giving something a fresh supply The club needs a transfusion of new members.


trans·​fu·​sion | \tran(t)s-ˈfyü-zhən \

Medical Definition of transfusion 

1 : the process of transfusing fluid (as blood) into a vein or artery

2 : something transfused

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Comments on transfusion

What made you want to look up transfusion? Please tell us where you read or heard it (including the quote, if possible).


to clear from alleged fault or guilt

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