Trisomy-21
noun
1.
Down syndrome.
Down syndrome
or Down’s syndrome
noun, Pathology.
1.
a genetic disorder, associated with the presence of an extra chromosome 21, characterized by mild to severe mental impairment, weak muscle tone, shorter stature, and a flattened facial profile.
trisomy 21 n.
See Down syndrome.
Down syndrome (doun) or Down’s syndrome (dounz)
n.
A congenital disorder, caused by the presence of an extra 21st chromosome, in which the affected person has mild to moderate mental retardation, short stature, and a flattened facial profile. Also called trisomy 21, trisomy 21 syndrome.
trisomy 21
See Down syndrome.
Read Also:
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