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John Langdon H., English physician, 1828-1896. See: Down syndrome.


1. Fine, soft, fluffy feathers forming the first plumage of a young bird and underlying the contour feathers in certain adult birds.
2. A soft, silky, or feathery substance, such as the first growth of a human beard.


Etymology: AS, adune, off hill
(of a computer) not operating as a result of malfunction or maintenance or for other reasons.


the soft, small feathers lacking BARBULES that cover the body of a bird and aid heat retention.

Patient discussion about down

Q. Can Down syndrome occur again? A few years ago, at the age of 32 my sister gave birth to a child that was diagnosed with Down syndrome. Now, at the age of 37 she's pregnant again. Can she have another baby with Down? Does the fact she has a baby with Down means she has higher risk for a second baby with Down?

A. - Older women especially after 35 years
- Previuosly child with Down Syndrome

Video link


Q. assessment of down syndrom

A. down syndrome is a very easy diagnosis - it just need a chromosome check and seeing 3 (instead 2) chromosomes number 21. -

Q. what does enlarged heart mean? is it linked to down syndrome? My wife is 16 weeks pregnant. we did a prenatal US and we were told that the baby hes an enlarged heart and that we are advised to do amniocentesis. A friend of mine had a baby with down syndrome, and he was toled that if they have done this procedure, the doctors could have find it on time and abort the pregnancy. Is there a clear connection between the enlarged hart and the fact that the doctor advised us to do this procedure to down syndrome?

A. Down syndrome is associated with several kinds of heart problems. those problems can cause an enlarged heart but usually it will appears as a post-natal complication.
The protocol that most obstetrics use is that if there is anything abnormal in the US there is an automatic referral to an amniocentesis procedure.
the US has a lot of false alarms, so they must check with the more accurate procedure.

More discussions about down
References in periodicals archive ?
Johannesburg :Hundreds of Anglo American Platinum workers downed tools and gathered Wednesday to decide how to respond to 14,000 South African job cuts planned by the firm.
A spokeswoman for RWE npower, which runs the plant, said: "We understand that around 300 contract workers, who work on either construction or maintenance projects at Aberthaw Power Station, have downed tools today in support of workers at the Lindsey Oil Refinery in North Lincolnshire.
We were all disgusted by that and everyone on the shop floor downed tools.
McCoy was helpless as the 11-10 favourite downed tools and the 12 remaining runners shot past him.
An estimated 300 contractors downed tools at Aberthaw yesterday morning, the second time in a week they had walked out in support.
Yesterday contractors working on the refurbishment of a nearby pub downed tools and volunteered to help clean up the damage.
Mr Bendelow said: "The workers downed tools just after 6.
STREET sweepers yesterday downed tools in a bid to stop litter louts.
He notably downed tools when unable to go past See More Business in the 1997 King George at Kempton.
If you enjoyed the strangely compelling pilot edition of this series, in which gardening goddess Charlie Dimmock downed tools in favour of becoming a trapeze artist, then you'll be pleased to see it's back on our screens.
The workers at the metal treatment factory, in the Brunswick Business Park, staged their first walkout in August and, come tomorrow, will have downed tools for four consecutive Fridays.