se·​ro·​neg·​a·​tive | \ ˌsir-ō-ˈne-gə-tiv How to pronounce seronegative (audio) \

Definition of seronegative

: having or being a negative serum reaction especially in a test for the presence of an antibody

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Other Words from seronegative

seronegativity \ ˌsir-​ō-​ˌne-​gə-​ˈti-​və-​tē How to pronounce seronegative (audio) \ noun

Examples of seronegative in a Sentence

Recent Examples on the Web For example, as described by a publication in EClinical Medicine 5% of 698 people in Israel remained seronegative despite having tested positive for the Covid-19 coronavirus. Bruce Y. Lee, Forbes, 5 Sep. 2021 There was other evidence the antibody cocktail helped these seronegative patients. Matthew Herper, STAT, 17 June 2021 The second dose brought a boost in antibodies for the seronegative group compared to the seropositive group. Chris Smith, BGR, 11 Mar. 2021 In the Regeneron data, the most dramatic drops in SARS-CoV-2 were seen in seronegative patients who had the highest levels of virus at the trial’s start. Jon Cohen, Science | AAAS, 30 Sep. 2020 For patients given a placebo, the seropositive group had a median time to alleviation of symptoms of 7 days, compared to 13 days for seronegative patients. NBC News, 29 Sep. 2020

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

1927, in the meaning defined above

History and Etymology for seronegative

sero- + negative entry 1

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Time Traveler for seronegative

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The first known use of seronegative was in 1927

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Last Updated

14 Sep 2021

Cite this Entry

“Seronegative.” Dictionary, Merriam-Webster, Accessed 17 Sep. 2021.

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More Definitions for seronegative


se·​ro·​neg·​a·​tive | \ -ˈneg-ə-tiv How to pronounce seronegative (audio) \

Medical Definition of seronegative

: having or being a negative serum reaction especially in a test for the presence of an antibody early seronegative syphilis a seronegative patient


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