: the coronavirus (Severe acute respiratory syndrome coronavirus 2 of the genus Betacoronavirus) that is the causative agent of COVID-19

Examples of SARS-CoV-2 in a Sentence

Recent Examples on the Web
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Their new framework does not make any mention of what will happen if a more dangerous SARS-CoV-2 variant emerges. Beth Mole, ArsTechnica, 20 May 2025 Globally, the World Health Organization estimates that the virus, SARS-CoV-2, infected 778 million people and killed 7.1 million from the beginning of the pandemic in April 2020 through March 2025. Amita Gupta, Baltimore Sun, 7 May 2025 The recency and geographical origins of the bat viruses ancestral to SARS-CoV and SARS-CoV-2 Science. Paul Smaglik, Discover Magazine, 7 May 2025 Republicans have speculated since the beginning of the pandemic that SARS-CoV-2 originated from research projects on bat coronaviruses funded by the National Institutes of Health and conducted at the Wuhan Institute of Virology in China. Gabrielle M. Etzel, The Washington Examiner, 5 May 2025 The ingredients in some vaccines, such as the COVID shots, have been updated regularly to better match the strains of the SARS-CoV-2 virus in circulation, without fundamentally changing the vaccines themselves. Rob Stein, NPR, 1 May 2025 Overall, the question of SARS-CoV-2's origin has become extremely politicized, as have most other aspects of the pandemic. ArsTechnica, 18 Apr. 2025 Long COVID, or post-acute sequelae of SARS-CoV-2 infection (PASC), refers to ongoing or new symptoms that persist weeks or months after the initial COVID-19 illness. Mark Weinstein, MSNBC Newsweek, 27 Apr. 2025 The causes of autism, the outcomes of gender-affirming care, and the origins of SARS-CoV-2 are all topics worthy of scientific investigation. Katherine J. Wu, The Atlantic, 24 Apr. 2025

Word History

First Known Use

2020, in the meaning defined above

Time Traveler
The first known use of SARS-CoV-2 was in 2020

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Cite this Entry

“SARS-CoV-2.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/SARS-CoV-2. Accessed 5 Jun. 2025.

Medical Definition

SARS-CoV-2

noun
: the coronavirus (Severe acute respiratory syndrome coronavirus 2 of the genus Betacoronavirus) that is the causative agent of COVID-19 see delta variant, omicron variant
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