We found 1 definitions of mongolianisms from 1 different sources.
Noun |
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mongolianism - a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation | ||
mongolism, Down's syndrome, Down syndrome, trisomy 21 | ||
trisomy chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell |