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noun B2 Upper-Intermediate Uncommon

influenza

ihn-floo-EHN-zuh

Influenza (noun) means a contagious viral illness affecting the airways and lungs, often causing fever, aches, and fatigue. Example: “Health officials urged people to get vaccinated ahead of influenza season.”

noun
1
A contagious viral illness affecting the airways and lungs, often causing fever, aches, and fatigue.
"Health officials urged people to get vaccinated ahead of influenza season."
"Influenza spreads quickly in crowded indoor spaces during winter."

How to use influenza

Learner’s notes

In plain EnglishThe proper medical name for the flu.

When to use it

"Flu" is the everyday word; "influenza" is used in formal or medical contexts.

Common pairings
influenza vaccine influenza outbreak strain of influenza

Word forms

influenzas plural, influenze plural

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Fill the gap

Can you complete this real example?

Health officials urged people to get vaccinated ahead of _____ season.

Etymology

Borrowed from Italian influenza, "influence," from Latin influentia — early epidemics were blamed on the "influence" of the stars. A doublet of influence.

Origin: Latin

flu grippe

Related words

Frequently asked questions

What does “influenza” mean?

The word “influenza” means a contagious viral illness affecting the airways and lungs, often causing fever, aches, and fatigue. In plain terms, the proper medical name for the flu.

How do you pronounce “influenza”?

“Influenza” is pronounced ihn-floo-EHN-zuh (/ˌɪn.fluˈɛn.zə/ in IPA).

How do you use “influenza” in a sentence?

Here is “influenza” used in a sentence: “Health officials urged people to get vaccinated ahead of influenza season.”

What part of speech is “influenza”?

“Influenza” is a noun.

Where does the word “influenza” come from?

The word “influenza” comes from Latin. Borrowed from Italian influenza, "influence," from Latin influentia — early epidemics were blamed on the "influence" of the stars. A doublet of influence.

Is “influenza” a common word?

“Influenza” is an uncommon word in modern English, usually learned at around the B2 level.

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Definitions: FreeDict original editorial