What does down syndrome mean?

Definitions for down syndrome

Here are all the possible meanings and translations of the word down syndrome.

Princeton's WordNet

  1. mongolism, mongolianism, Down's syndrome, Down syndrome, trisomy 21(noun)

    a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation


  1. Down 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.

  2. Origin: Named after John L.H. Langdon-Down (1828-1896), an English physician who described it in the late 1800s. The term was first used in 1961.


  1. Down syndrome

    Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. Down syndrome is the most common chromosome abnormality in humans. It is typically associated with a delay in cognitive ability and physical growth, and a particular set of facial characteristics. The average IQ of young adults with Down syndrome is around 50, whereas young adults without the condition typically have an IQ of 100. A large proportion of individuals with Down syndrome have a severe degree of intellectual disability. Down syndrome is named after John Langdon Down, the British physician who described the syndrome in 1866. The condition was clinically described earlier by Jean Etienne Dominique Esquirol in 1838 and Edouard Seguin in 1844. Down syndrome was identified as a chromosome 21 trisomy by Dr. Jérôme Lejeune in 1959. Down syndrome can be identified in a newborn by direct observation or in a fetus by prenatal screening. Pregnancies with this diagnosis are often terminated. The CDC estimates that about one of every 691 babies born in the United States each year is born with Down syndrome.

U.S. National Library of Medicine

  1. Down Syndrome

    A chromosome disorder associated either with an extra chromosome 21 or an effective trisomy for chromosome 21. Clinical manifestations include hypotonia, short stature, brachycephaly, upslanting palpebral fissures, epicanthus, Brushfield spots on the iris, protruding tongue, small ears, short, broad hands, fifth finger clinodactyly, Simian crease, and moderate to severe MENTAL RETARDATION. Cardiac and gastrointestinal malformations, a marked increase in the incidence of LEUKEMIA, and the early onset of ALZHEIMER DISEASE are also associated with this condition. Pathologic features include the development of NEUROFIBRILLARY TANGLES in neurons and the deposition of AMYLOID BETA-PROTEIN, similar to the pathology of ALZHEIMER DISEASE. (Menkes, Textbook of Child Neurology, 5th ed, p213)


  1. Chaldean Numerology

    The numerical value of down syndrome in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of down syndrome in Pythagorean Numerology is: 7

Sample Sentences & Example Usage

  1. Rob Scott:

    Down syndrome is literally one of the most beautiful things that’s ever happened in my life.

  2. Heather Bradley:

    I think it really normalizes Down syndrome and helps people see we are really like any other family.

  3. Lacey Parker:

    If I put limitations on her then so does society, down syndrome is a label. It's not who she is . . . It's not what she can become.

  4. Heather Bradley:

    I really appreciate Target putting them in their ads, i think it really normalizes Down syndrome and helps people see we are really like any other family.

  5. The Mighty and ABC News:

    Someone who is able to live a life of empathy and sympathy, and without agendas or guile, is someone we all want to know. It worked out for you, because of the person you are. i don’t know what the odds are of a woman born with Down syndrome marrying the love of her life.

Images & Illustrations of down syndrome

  1. down syndromedown syndromedown syndrome

Translations for down syndrome

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