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Down syndrome

1 ENTRIES FOUND:
Down syndrome /ˈdaʊn-/ noun
Down syndrome
/ˈdaʊn-/
noun
Learner's definition of DOWN SYNDROME
[noncount] medical
: a condition that someone is born with and that causes below average mental abilities and problems in physical development.唐氏综合征
called also Down's, Down's syndrome

Down syndrome

noun

variants or Down's syndrome
: a congenital condition characterized especially by developmental delays, usually mild to moderate impairment in cognitive functioning, short stature, upward slanting eyes, a flattened nasal bridge, broad hands with short fingers, decreased muscle tone, and by trisomy of the human chromosome numbered 21

called also trisomy 21

Word History

Etymology

J. L. H. Down †1896 English physician

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of Down syndrome was in 1961

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