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trisomy 21

DEFINITIONS OF: trisomy 21

1

n a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation

Synonyms:
Down syndrome, Down's syndrome, mongolianism, mongolism
Type of:
birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder
a defect that is present at birth
trisomy
chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
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