mongolianism

Noun

1.

mongolianism - 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

backwardness, birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder, Down syndrome, Down's syndrome, mental retardation, mongolism, retardation, slowness, subnormality, trisomy, trisomy 21