MENTAL DEFICIENCY
\mˈɛntə͡l dɪfˈɪʃənsi], \mˈɛntəl dɪfˈɪʃənsi], \m_ˈɛ_n_t_əl d_ɪ_f_ˈɪ_ʃ_ə_n_s_i]\
Definitions of MENTAL DEFICIENCY
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Subnormal intellectual functioning which originates during the developmental period. This has multiple potential etiologies, including genetic defects and perinatal insults. Intelligence quotient (IQ) scores are commonly used to determine whether an individual is mentally retarded. IQ scores between 70 and 79 are in the borderline mentally retarded range. Scores below 67 are in the retarded range. (Joynt, Clinical Neurology, 1992, Ch55, p28)
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Word of the day
tinctura quininae ammoniata
- A preparation made by dissolving quinin sulphate in alcohol [Br. Ph.].