trans·​fu·​sion | \ tran(t)s-ˈfyü-zhən How to pronounce transfusion (audio) \

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 How to pronounce transfusion (audio) , -​ˈfyü-​zhə-​nᵊl \ adjective

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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 The risk of transmitting HIV through blood transfusion has plunged dramatically over the decades, with the odds now estimated at 1 in 2 million, according to a review published in Transfusion Medicine. Emily Alpert Reyes, Los Angeles Times, 6 July 2021 His recent platelet transfusion was delayed because of the shortage — luckily for just a few hours. Jon Lapook, CBS News, 6 July 2021 The new hospital has intensive care, rehabilitation and laboratory services, with endoscopy, oncology care, imaging, biotherapy, and transfusion care. William Thornton |, al, 7 July 2021 The series stars Tatiana Maslany as lawyer Jennifer Walters, a cousin of Bruce Banner, who inherits his superpower after getting a blood transfusion. Zoe Haylock, Vulture, 10 June 2021 The pool of blood had turned into an abscess the size of a small watermelon, requiring a blood transfusion, surgery and six weeks of antibiotics. Laura Kusisto, WSJ, 24 May 2021 Safety results also were similar — less than 1% had major bleeding requiring hospitalization and a transfusion., 15 May 2021 When there are blood shortages, patients like Amy are affected first, as people in more critical condition are prioritized, said Dr. Leslie Greebon, director of transfusion medicine services at University Health. Lauren Caruba, San Antonio Express-News, 15 Apr. 2021 Reik, a pathologist who is board-certified in transfusion medicine, said researchers hope to have enough data by year’s end to begin analysis. Kate Santich,, 20 May 2021

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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Time Traveler for transfusion

Time Traveler

The first known use of transfusion was in 1578

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Dictionary Entries Near transfusion



transfusion cell

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Statistics for transfusion

Last Updated

23 Jul 2021

Cite this Entry

“Transfusion.” Dictionary, Merriam-Webster, Accessed 5 Aug. 2021.

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More Definitions for transfusion


trans·​fu·​sion | \ trans-ˈfyü-zhən How to pronounce transfusion (audio) \

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 How to pronounce transfusion (audio) \

Medical Definition of transfusion

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

More from Merriam-Webster on transfusion

Nglish: Translation of transfusion for Spanish Speakers

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


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