down syndrome
11Down syndrome — Down s syndrome …
12Down syndrome features — Children with Down syndrome have multiple malformations and mental impairment due to the presence of extra material from chromosome 21. Among the more common physical features are hypotonia (floppiness), small head with brachycephaly, epicanthic… …
13Down syndrome — /ˈdaʊn sɪndroʊm / (say down sindrohm) noun a genetic condition resulting from a third chromosome on the 21st chromosomal pairing, characterised by varying degrees of intellectual and physical impairment. Also, Down s syndrome. {from John Langdon… …
14Down syndrome — noun Etymology: J. L. H. Down died 1896 English physician Date: 1961 a congenital condition characterized by moderate to severe mental retardation, slanting eyes, a broad short skull, broad hands with short fingers, and trisomy of the human… …
15Down syndrome — Congenital condition, formerly called mongolism; named after the British physician J. L. H. Down (1828–1896). Sometimes still called Down’s syndrome, but increasingly the convention in medical circles is to abandon the possessive in the names of …
16Health aspects of Down syndrome — Down syndrome is a genetic disease resulting from the presence of all or part of an extra 21st chromosome (trisomy 21). The medical consequences of this extra genetic material are highly variable and may affect the function of any organ system or …
17Genetic origins of Down syndrome — Down syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on the 21st chromosome, either in whole (trisomy 21) or part (such as due to translocations). The effects of the extra copy varies… …
18translocation Down syndrome — Down syndrome in which the excess chromosomal material (the long arm of chromosome 21) is translocated to another acrocentric chromosome (in standard trisomy 21 there is an additional chromosome 21). A carrier of the translocation chromosome has… …
19Down syndrome (disease) — (doun) [John Langdon Haydon Down, English physician, 1828–1896] see under syndrome …
20Down syndrome — noun Condition caused by a chromosomal excess, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids. Syn: trisomy 21 …
