Dictionary

flu

noun \ˈflü\

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

Full Definition of FLU

1
:  influenza
2
:  any of several virus diseases marked especially by respiratory or intestinal symptoms
flu–like \ˈflü-ˌlīk\ adjective
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Origin of FLU

by shortening
First Known Use: 1839
FLU Defined for Kids

flu

noun \ˈflü\

Definition of FLU for Kids

1
:  influenza
2
:  any of several virus diseases something like a cold
Medical Dictionary

flu

noun \ˈflü\

Medical Definition of FLU

1
2
:  any of several diseases caused by bacteria or viruses and marked especially by respiratory or intestinal symptoms—see intestinal flu
flu·like \-ˌlīk\ adjective

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