mental retardation

noun

Definition of mental retardation

:subaverage intellectual ability equivalent to or less than an IQ of 70 that is accompanied by significant deficits in abilities (as in communication or self-care) necessary for independent daily functioning, is usually present from birth or infancy, and is manifested especially by delayed or abnormal development, by learning difficulties, and by problems in social adjustment :intellectual disability

mentally retarded

adjective

First Known Use of mental retardation

1914


Medical Dictionary

mental retardation

noun

medical Definition of mental retardation

:subaverage intellectual ability equivalent to or less than an IQ of 70 that is accompanied by significant deficits in abilities (as in communication or self-care) necessary for independent daily living, is usually present from birth or infancy, and is manifested especially by delayed or abnormal development, by learning difficulties, and by problems in social adjustment :intellectual disability
  • Caused by the presence of an extra chromosome, Down's often results in such abnormalities as weak muscle tone, short stature and a flattened nose, as well as mental retardation.
  • —Fred BernsteinPeople Weekly25 Apr. 1988
  • fragile X syndrome, the most common inherited cause of mental retardation, which draws its name from a chromosomal deformity in its sufferers.
  • —John RennieScientific AmericanMarch 1993

mentally retarded

adjective
    • Now age 25, she lives in a group home for mentally retarded adults.
    • —Sandra BlakesleeThe New York Times2 Aug. 1994
    • Patients are short and thin, mentally retarded and can have many other problems …
    • —Sue GoetinckThe Dallas Morning News28 Aug. 1995

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