: a severe respiratory illness that is caused by the SARS-CoV-1 coronavirus, is transmitted especially by contact with infectious material (such as respiratory droplets or body fluids), and is characterized by fever, headache, body aches, a dry cough, hypoxia, and usually pneumonia

called also severe acute respiratory syndrome

Examples of SARS in a Sentence

Recent Examples on the Web
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Still, the channel has always proven to be resilient — a veritable phoenix that keeps rising stronger and ever more creative after world-shattering events such as 9/11, the SARS outbreak and the 2008 world financial crisis. — Jennifer Weil, Footwear News, 6 Oct. 2026 The epidemiology of plague also differs substantially from that of SARS-CoV-2. — Krutika Kuppalli, STAT, 6 Oct. 2026 The shipping magnate led Hong Kong from 1997 to 2005, steering it through the Asian financial crisis, deadly SARS outbreak and massive protests over a controversial anti-treason law. — Los Angeles Times, 21 Sep. 2026 The leading hypothesis centers on the idea that SARS-CoV-2, the causative virus, originated in animals then emerged humans following an event related to zoonotic spillover. — Encyclopedia Britannica, 25 Aug. 2026 See All Example Sentences for SARS

Word History

Etymology

severe acute respiratory syndrome

First Known Use

2003, in the meaning defined above

Time Traveler
The first known use of SARS was in 2003

Cite this Entry

“SARS.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/SARS. Accessed 9 Oct. 2026.

Kids Definition

: a severe respiratory illness that is caused by a coronavirus, is transmitted especially by contact with infectious material (as respiratory droplets or body fluids), and is characterized by fever, headache, body aches, a dry cough, shortness of breath, and usually pneumonia
Etymology

severe acute respiratory syndrome

Medical Definition

: a severe respiratory illness that is transmitted especially by contact with infectious material (such as respiratory droplets or body fluids), is caused by the SARS-CoV-1 coronavirus, and is characterized by fever, headache, body aches, a dry cough, hypoxia, and usually pneumonia

called also severe acute respiratory syndrome

More from Merriam-Webster on SARS

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