Down syndrome
A genetic disorder caused by the presence of all or part of a third copy of chromosome…A genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a chromosomal excess), whereby the patients typically have a delay in cognitive ability and physical growth, as well as a small head and tilted eyelids.
» She was born with Down syndrome.
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By meaning 1
Examples
8 sentencesMeaning
1 senses(Australia, Canada, Ireland, New Zealand, US, uncountable, usually)A genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a chromosomal excess), whereby the patients typically have a delay in cognitive ability and physical growth, as well as a small head and tilted eyelids.
Downsyndrom, Down-Syndrom, Trisomie 21
синдром Даунаsindrom Dauna
- a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation
Origin
Named after English physician John Langdon Haydon Down (1828–1896), who first described thNamed after English physician John Langdon Haydon Down (1828–1896), who first described the condition as a distinct form of mental disability in the 1860s.
Wiktionary, CC BY-SA 4.0 · source
Synonyms
4 synonyms- a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation:mongolianismDown-ap-s syndrometrisomy 21
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable
See also
neighbours in the dictionaryDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.