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see mental retardationmental retardation,
below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living.
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The patient was born with intrauterine growth retardation (birth height and weight under 10 percentile), microcephalia (under 10 percentile), broad nasal root, hypoplastic ala nasi, long philtrum, cleft palate, micrognathia, and low set ears (Figure 1c).
In the eggs and embryos of Rana sylvatica and Ambystoma maculatum abnormalities at several developmental stages were noted such as microcephalia, scoliosis, edema, and retarded growth.
The child suffers from cerebral palsy and microcephalia.