Definition, Meaning & Synonyms

flu

noun

/fluː/

Definition

Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses.

Examples

She caught the flu and had to stay in bed for a week.
The flu season typically peaks in the winter months.
Kids are more susceptible to the flu and are often encouraged to get vaccinated.

Meaning

The flu primarily affects the nose, throat, and sometimes the lungs, and it can cause mild to severe illness. It is more serious than the common cold and can lead to hospitalization or even death in severe cases.