Mental-retardation



noun
1.
Usually Offensive. a developmental disorder characterized in varying degrees by a subnormal ability to learn, a substantially low IQ, and impaired social adjustment.
noun
1.
(psychiatry) the condition of having a low intelligence quotient (below 70)

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.
mental retardation
Below-average intellectual ability resulting from a genetic defect, brain injury, or disease, and usually present from birth or early infancy.

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