Dictionary

mental retardation

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 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

First Known Use of MENTAL RETARDATION

1914

mental retardation

noun    (Medical Dictionary)

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 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

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