mental retardation
noun Date: 1914 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 present from birth or infancy, and is manifested especially by delayed or abnormal development, by learning difficulties, and by problems in social adjustment • mentally retarded adjective

New Collegiate Dictionary. 2001.

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  • mental retardation — n. a condition, usually present from birth, characterized by intellectual functioning that is below average: it ranges in degree from borderline (IQ of 71 84) to mild (IQ of 50 55 to approximately 70) to moderate (IQ of 35 40 to 50 55) to severe… …   English World dictionary

  • Mental retardation — Classification and external resources ICD 10 F70 F …   Wikipedia

  • Mental retardation — A term used when a person has certain limitations in mental functioning and in skills such as communicating, taking care of him or herself, and social skills. These limitations will cause a child to learn and develop more slowly than a typical… …   Medical dictionary

  • mental retardation — noun lack of normal development of intellectual capacities • Syn: ↑retardation, ↑backwardness, ↑slowness, ↑subnormality • Derivationally related forms: ↑subnormal (for: ↑subnormality), ↑ …   Useful english dictionary

  • Mental Retardation —    (See also Autism.)    Mental retardation (MR) was once in the province of psychiatry, but even though the diagnosis continues to be included in DSM, the condition has now largely passed into the hands of pediatrics. MR is defined by three… …   Historical dictionary of Psychiatry

  • mental retardation — a developmental disorder characterized by a subnormal ability to learn and a substantially low IQ. [1900 15] * * * Subaverage intellectual ability that is present from birth or infancy and is manifested by abnormal development, learning… …   Universalium

  • mental retardation — the state of those whose intellectual powers have failed to develop to such an extent that they are in need of care and protection and require special education. The handicap may be classified according to the intelligence quotient (IQ) as mild… …   The new mediacal dictionary

  • mental retardation — condition in which the intellect does not develop normally …   English contemporary dictionary

  • mental retardation — men′tal retarda′tion n. psi a developmental disorder characterized in varying degrees by a subnormal ability to learn, a substantially low IQ, and impaired social adjustment • Etymology: 1900–15 …   From formal English to slang

  • Mental retardation and clasped thumbs — A syndrome with the following characteristic features: (1) Neurological: Mental retardation and aphasia (lack of speech); (2) Limbs: Clasped (adducted) thumbs, absent extensor pollicis longus and/or brevis muscles to the thumb, shuffling gait,… …   Medical dictionary

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