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
How to take care of a painful shingles rash
Early on, shingles can feel a lot like the flu.
—
Alisa Hrustic, SELF, 9 Apr. 2025
Cuts to both the workforce and federal programs are hobbling measles outbreak response efforts and threatening the country’s ability to mitigate avian flu.
—Jordan Miller, The Conversation, 3 Apr. 2025
The Trump administration has already purged a significant amount of data and information from important health websites, such as information on flu vaccination campaigns.
—Omer Awan, Forbes.com, 3 Apr. 2025
Grant money helped the state respond to measles and avian flu and monitor wastewater to gauge levels of diseases like COVID-19, according to state officials.
—Alex Derosier, Twin Cities, 2 Apr. 2025
See All Example Sentences for flu
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Alisa Hrustic, SELF, 9 Apr. 2025
Cuts to both the workforce and federal programs are hobbling measles outbreak response efforts and threatening the country’s ability to mitigate avian flu.
—Jordan Miller, The Conversation, 3 Apr. 2025
The Trump administration has already purged a significant amount of data and information from important health websites, such as information on flu vaccination campaigns.
—Omer Awan, Forbes.com, 3 Apr. 2025
Grant money helped the state respond to measles and avian flu and monitor wastewater to gauge levels of diseases like COVID-19, according to state officials.
—Alex Derosier, Twin Cities, 2 Apr. 2025
See All Example Sentences for flu
Cite this Entry
“Flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flu. Accessed 13 Apr. 2025.
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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