hyperactivity

Definition / meaning of hyperactivity

A higher than normal level of activity. Hyperactivity can be used to describe the increased action of a body function, such as hormone production, or behavior. A person who is hyperactive may seem to be always moving or fidgeting, impulsive, unable to concentrate, and talking too much.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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