apheresis

noun
aphe·​re·​sis | \ ˌa-fə-ˈrē-səs How to pronounce apheresis (audio) \
plural aphereses\ ˌa-​fə-​ˈrē-​ˌsēz How to pronounce aphereses (audio) \

Definition of apheresis

: withdrawal of blood from a donor's body, removal of one or more blood components (such as plasma, platelets, or white blood cells), and transfusion of the remaining blood back into the donor

called also pheresis

Examples of apheresis in a Sentence

Recent Examples on the Web The Connecticut patients, two males with acute myeloid leukemia, each received a platelet unit made from the same apheresis donation, collected in Massachusetts. Susan Scutti, CNN, "CDC investigates after 4 patients got sepsis from contaminated platelet transfusions," 13 June 2019 During the platelet donation procedure, a machine is used to separate the platelets in your blood from the other red blood cells and white blood cells through a process called apheresis. NBC News, "Here's what you need to know about donating blood," 14 June 2019 When collecting platelets for a transfusion, a donor's blood is drawn into an apheresis cell separator machine, which extracts platelets and returns the rest of the blood into the donor, according to the American Red Cross. Susan Scutti, CNN, "CDC investigates after 4 patients got sepsis from contaminated platelet transfusions," 13 June 2019 Plasma today is mostly collected via apheresis, a process where whole blood is extracted, spun in a centrifuge, and the plasma is skimmed off. The Economist, "Bans on paying for human blood distort a vital global market," 10 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'apheresis.' 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 apheresis

1977, in the meaning defined above

History and Etymology for apheresis

from -apheresis (as in plasmapheresis)

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Time Traveler for apheresis

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The first known use of apheresis was in 1977

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Cite this Entry

“Apheresis.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/apheresis. Accessed 22 January 2020.

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More Definitions for apheresis

apheresis

noun
aphe·​re·​sis | \ ˌa-fə-ˈrē-səs \
plural aphereses\ -​ˌsēz How to pronounce aphereses (audio) \

Medical Definition of apheresis

: withdrawal of blood from a donor's body, removal of one or more components (as plasma, blood platelets, or white blood cells) from the blood, and transfusion of the remaining blood back into the donor

called also pheresis

— see leukapheresis, plasmapheresis, plateletpheresis

More from Merriam-Webster on apheresis

Rhyming Dictionary: Words that rhyme with apheresis

Britannica.com: Encyclopedia article about apheresis

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