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TRISOMY 21
I. (noun)
Sense 1
Meaning:
A congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation
Synonyms:
Down's syndrome; Down syndrome; mongolianism; mongolism; trisomy 21
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("trisomy 21" is a kind 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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