A congenital disorder caused by the presence of an extra 21st chromosome. People with Down syndrome have mild to moderate mental retardation, short stature, and a flattened facial profile. The syndrome is named after its discoverer, British physician John Langdon Haydon Down (1828–1896).
Find another word for trisomy. In this page you can discover 1 synonyms, antonyms, idiomatic expressions, and related words for trisomy, like: and down-syndrome.