subnormal

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subnormal

having a low intelligence, esp having an IQ of less than 70

subnormal

[səb′nȯr·məl]
(mathematics)
For a given point on a plane curve, the projection on the x axis of a rectangular coordinate system of the segment of the normal between the given point and the intersection of the normal with the x axis.
References in periodicals archive ?
Criteria for identification of adults with mental deficits included demonstration of "social incompetence" grounded in "mental subnormality" associated with "developmental arrest" that undermined attainment of age expected levels of maturity (Doll 1941).
Abundant references to antecedents, parallels and alternative intellectual currents of the sixties continue in chapter 2, on Manuel Vazquez Montalban's concept of subnormality. Vasquez Montalban is compared to Marcuse, with the subnormal providing an alternative to one--dimentional thinking as critiqued by the latter.
Patients were also excluded if they had asthma, chronic or acute lung disease (e.g., cystic fibrosis), cardiovascular disease, major psychiatric diagnoses, mental subnormality, dementia, or complications from previous episodes of lower respiratory tract infection (such as hospital admission for pneumonia).