down_syndrome | ||
1. | [ noun ] (medicine,psychology) a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation | |
Synonyms: | mongolianism Down's_syndrome trisomy_21 mongolism | |
Related terms: | birth_defect trisomy retardation | |
Similar spelling: |
Down's_syndrome |