\ ˈflü How to pronounce flu (audio) \

Definition of flu

2 : any of several virus diseases marked especially by respiratory or intestinal symptoms

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Other Words from flu

flu-like \ ˈflü-​ˌlīk How to pronounce flu-like (audio) \ adjective

Examples of flu in a Sentence

He came down with a bad bout of the flu.
Recent Examples on the Web That is almost as good as for measles and better than the flu jab, with an efficacy of just 40-60% (see article). The Economist, "Suddenly, hope The promise of the new covid-19 vaccine is immense," 14 Nov. 2020 Avon, West Hartford, Glastonbury, Canton, Cromwell, Burlington and Simsbury are among those where the senior centers are closed to routine programming, although a few offer flu clinics, one-one-one social services counseling or health screenings. Don Stacom, courant.com, "Serving the elderly in a pandemic: Connecticut’s senior centers vary between Zoom and in-person classes," 13 Nov. 2020 Health officials in Seminole and Orange also have looked at ongoing flu vaccinations as practice runs for a future COVID-19 vaccination effort. Martin E. Comas, orlandosentinel.com, "Central Florida plans for large-scale coronavirus vaccination effort," 13 Nov. 2020 Ohio added two new dashboards for additional data: one that provides ZIP Code-level numbers on COVID-19 in more populous counties and another that details flu cases. Jessie Balmert, The Enquirer, "Ohio sets new COVID-19 record with 7,101 new cases reported; DeWine considering closures," 12 Nov. 2020 The state health department is relying on an entirely separate part of law — one crafted in the wake of the 1918 Spanish flu epidemic — than Whitmer used to issue her executive orders. Dave Boucher, Detroit Free Press, "Whitmer warns she's 'strongly considering' any action to combat COVID-19 spread," 12 Nov. 2020 Unfazed, the remaining pro-Beijing camp got to work, reviewing a bill on parking spaces and discussing flu vaccines. New York Times, "As Hong Kong Opposition Quits Council, Pro-Beijing Forces Reign," 12 Nov. 2020 The majority of schools in the area reported higher-than-average student absenteeism due to flu symptoms. Megan Molteni, Wired, "Covid Winter is Coming. Could Humidifiers Help?," 12 Nov. 2020 Remember that some people without symptoms may be able to spread COVID-19 or flu. Mary Colurso | Mcolurso@al.com, al, "Thanksgiving 2020: CDC tips to help you celebrate safely during coronavirus," 12 Nov. 2020

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

1839, in the meaning defined at sense 1

History and Etymology for flu

by shortening

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Statistics for flu

Last Updated

17 Nov 2020

Cite this Entry

“Flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flu. Accessed 28 Nov. 2020.

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More Definitions for flu


How to pronounce flu (audio)

English Language Learners Definition of flu

: a common disease that is caused by a virus and that causes fever, weakness, body aches, and breathing problems


\ ˈflü How to pronounce flu (audio) \

Kids Definition of flu

2 : any of several virus diseases something like a cold


\ ˈflü How to pronounce flu (audio) \

Medical Definition of flu

2 : any of several chiefly viral illnesses marked especially by respiratory or gastrointestinal symptoms — see intestinal flu

Other Words from flu

flu-like \ -​ˌlīk How to pronounce flu-like (audio) \ also flulike adjective
flu-like symptoms

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More from Merriam-Webster on flu

Nglish: Translation of flu for Spanish Speakers

Britannica English: Translation of flu for Arabic Speakers

Britannica.com: Encyclopedia article about flu

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