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rheumatoid factor

[ roo-muh-toid fak-ter ]

noun

, Biochemistry.
  1. an antibody that is found in the blood of many persons with rheumatoid arthritis and that reacts against globulins in the blood.


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Word History and Origins

Origin of rheumatoid factor1

First recorded in 1945–50

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rheumatoid arthritisrheumatoid spondylitis