| 单词 | down's syndrome |
| 释义 | > as lemmasDown's syndrome Down's syndrome n. (also Down syndrome) a congenital condition characterized by a distinctive pattern of physical characteristics including a flattened skull, pronounced folds of skin in the inner corners of the eyes, large tongue, and short stature, and by some degree of limitation of intellectual ability and social and practical skills.Down’s syndrome most commonly results from the presence of a third copy of chromosome 21, a condition which is associated with increasing maternal age. Cf. trisomy-21 at trisomic adj. and n. Derivatives.Congenital heart defects are also significantly more common in persons with Down’s syndrome than in the general population.An earlier name for this syndrome was mongolism (now considered to be misleading and offensive).extracted from Downn.5< as lemmas |
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