chromosomal deficiency, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids.' name='description'> Down's syndrome - definition and meaning
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Down's syndrome

Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chiefly UK, Canada Condition caused by a chromosomal deficiency, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

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.

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