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Mental retardation
- 5 dictionary resultsmental retardation
–noun
| a developmental disorder characterized by a subnormal ability to learn and a substantially low IQ. |
Origin:
1900–15
1900–15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To Mental retardation
| mental retardation n. Subnormal intellectual development as a result of congenital causes, brain injury, or disease and characterized by any of various cognitive deficiencies, including impaired learning, social, and vocational ability. Also called mental deficiency. |
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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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Main Entry: mental retardation
Function: noun
: subaverage intellectual ability that is equivalent to or less than an IQ of 70, is present from birth or infancy, and ismanifested especially by abnormal development, by learning difficulties, and by problems in social adjustment —mentally retarded adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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mental retardation n.
Subnormal intellectual development or functioning that is the result of congenital causes, brain injury, or disease and is characterized by any of various deficiencies, ranging from impaired learning ability to social and vocational inadequacy. Also called mental deficiency.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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| mental retardation
Below-average intellectual ability resulting from a genetic defect, brain injury, or disease, and usually present from birth or early infancy. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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