mongolianism

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WordNet Dictionary
	Definition:		[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, mongolism, trisomy 21
	See Also:		backwardness, birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder, mental retardation, retardation, slowness, subnormality, trisomy