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Hyperactivity

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hy⋅per⋅ac⋅tiv⋅i⋅ty

[hahy-per-ak-tiv-i-tee]
–noun
1. the condition of being hyperactive.
2. hyperkinesia.

Origin:
1885–90; hyperactive + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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hy·per·ac·tive   (hī'pər-āk'tĭv)   
adj.  
  1. Highly or excessively active: a hyperactive thyroid gland.

    1. Having behavior characterized by overactivity.

    2. Having attention deficit disorder. Not in scientific use.

hy'per·ac'tive·ly adv., hy'per·ac·tiv'i·ty n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: hy·per·ac·tiv·i·ty
Pronunciation: "hI-p&-"rak-'tiv-&t-E
Function: noun
Inflected Form: plural -ties
: a state or condition of being excessively or pathologically active; especially : ATTENTION DEFICIT DISORDER
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

hyperactivity hy·per·ac·tiv·i·ty (hī'pər-āk-tĭv'ĭ-tē)
n.
A general restlessness or excess of movement, as that in children with minimal brain dysfunction or hyperkinesis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
hyperactivity   (hī'pər-āk-tĭv'ĭ-tē)  Pronunciation Key 
An abnormally high level of activity or excitement shown by a person, especially a child, that interferes with the ability to concentrate or interact with others.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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