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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 ?
Workmen refurbishing the building upstairs downed tools, claiming they felt a bitterly cold presence, accompanied by an oppressive feeling of dread.
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.
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.
Fire Brigades Union (FBU) members downed tools between 10am and 5pm amid their ongoing pensions dispute with the Government.
But as soon as the vulnerable 75-year-old handed over a cheque, Gaskin and his helper Joseph McElvaney downed tools and left.
Comment by caringparent Desperate jobseeker sets himself alight outside Selly Oak jobcentre If all the job centre staff downed tools and refused to implement many of the draconian policies the Government has put in place, this whole ideology that often criminalises the unemployed when they've done nothing wrong would fall apart.
The Magpies are on the brink of an pounds 8m deal for the 24-year-old, who downed tools in the summer to force a move to Tyneside.
DIY store staff downed tools to welcome Father Christmas and his friendly polar bear helper.
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.