1
2
: any of several virus diseases marked especially by respiratory or intestinal symptoms
Examples of flu in a Sentence
He came down with a bad bout of the flu.
Recent Examples on the Web
Fewer people are being hospitalized and dying from COVID-19, but health officials say the virus remains deadlier than the flu.
—
Ryan Fonseca, Los Angeles Times, 29 May 2024
At the moment, the bird flu hasn't adapted to spread from person to person through the air like the seasonal flu.
—Amy Maxmen | Kff Health News, ABC News, 24 May 2024
While stationed at Fort Dix in New Jersey, he was assigned to study the seasonal flood of head cold and flu cases among new recruits.
—Sam Roberts, New York Times, 21 May 2024
The Centers for Disease Control and Prevention asked local and state health officials Tuesday to maintain flu surveillance operations at peak-season levels over the summer in a bid to remain watchful for any signs of human-to-human spread of the H5N1 bird flu virus.
—Helen Branswell, STAT, 21 May 2024
See all Example Sentences for flu 
Ryan Fonseca, Los Angeles Times, 29 May 2024
At the moment, the bird flu hasn't adapted to spread from person to person through the air like the seasonal flu.
—Amy Maxmen | Kff Health News, ABC News, 24 May 2024
While stationed at Fort Dix in New Jersey, he was assigned to study the seasonal flood of head cold and flu cases among new recruits.
—Sam Roberts, New York Times, 21 May 2024
The Centers for Disease Control and Prevention asked local and state health officials Tuesday to maintain flu surveillance operations at peak-season levels over the summer in a bid to remain watchful for any signs of human-to-human spread of the H5N1 bird flu virus.
—Helen Branswell, STAT, 21 May 2024
See all Example Sentences for flu
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flu.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flu. Accessed 5 Jun. 2024.
Copy CitationKids Definition
flu
noun2
: any of several virus diseases that are something like a cold
flu-like
adjective
ˈflü-ˌlīk
Medical Definition
flu
noun1
2
: any of several chiefly viral illnesses marked especially by respiratory or gastrointestinal symptoms see intestinal flu
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