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

Today, treatment requires regular blood transfusions, which come with their own side effects that can be fatal over time. Joseph Walker, WSJ, "Biotech Proposes Paying for Pricey Drugs by Installment," 8 Jan. 2019 Each year afterward, the insurer would pay down an additional 20%, but only if the treatment meets certain criteria, such as eliminating or reducing the number of transfusions. Joseph Walker, WSJ, "Biotech Proposes Paying for Pricey Drugs by Installment," 8 Jan. 2019 But many older cases were caused by blood transfusions before testing for the virus existed. Michelle Andrews, Washington Post, "If You’ve Got Hep C, Spitting Can Be A Felony," 19 June 2018 He was given a blood transfusion, but will likely need another surgery to remove the remaining scar tissue. Madeline Farber, Fox News, "Texas dog found with shoelace embedded in neck, severely swollen head, saved by animal rescue," 6 Sep. 2018 Seven women reported receiving a blood transfusion, and 26 reported receiving antibiotics (route of administration (IV or oral) could not be determined). Julia Belluz, Vox, "Abortions by mail are available now in the US. Here’s what you need to know.," 20 Oct. 2018 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

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

9 Feb 2019

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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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More from Merriam-Webster on transfusion

Rhyming Dictionary: Words that rhyme with transfusion

Spanish Central: Translation of transfusion

Nglish: Translation of transfusion for Spanish Speakers

Britannica English: Translation of transfusion for Arabic Speakers Encyclopedia article about transfusion

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 deny responsibility for

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