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1. the color produced by the longest waves of the visible spectrum, approximately 630 to 750 nm.
2. a dye or stain with this color.
scarlet red an azo dye used as a biological stain for fats.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


One of the primary colors, produced by the longest waves of the visible spectrum, with violet at the other end. For individual red dyes, see specific name.
[A.S. reád]
Farlex Partner Medical Dictionary © Farlex 2012
Drug slang A regional term for, ‘under the influence of drugs, stoned’
Fringe medicine A colour believed—by the proponents of the pseudoscience of colour therapy—to increase circulation and energy, and reduce anxiety
Physics A primary colour produced by the longest waves of the visible electromagnetic spectrum from 630 to 740 nm
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


One of the hues of the visible spectrum evoked by stimulation of the retina by wavelengths beyond 630 nm. The complementary colours to red are blue-green (between 490.4 and 492.4 nm).
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

Patient discussion about red

Q. is red meat bad for you??? and what about white meat like pork??? why is consider to be healthy eating vegie what are the advantages of this kind of nutrition ? what are the actual differences in a nutrition matter ?

A. Eating red meat an average of about twice a day seems to raise the risk of stomach cancer. This risk is increased even more if the meat is barbecued and well done. there are more evidence about colon cancer , and also higher risk of strokes. but i have no idea about white meat. although barbecued meat (white or red) had a material that our liver cause it to be cancerous.

Q. Does anybody know what can be done about a very itchy red rash on ones' toes which comes back every few months I've used different sorts of creams such as Lamasil. It's really bothering me and I'd love to get a few directions before I give up and go see a doctor.

A. Sounds like 'Athletes foot'. Here is a website that lists some remedies for it:'s_Foot.cfm

Q. I have red blotches under my skin and swelling on hands and feet with joint pain. Any answers. it has been two days the blotches are gone but I still have swelling.

A. could be some kind of joint Rheumatic fever... some kind of joint infection. this should be looked upon by a Dr. those things can cause damage if not treated right. a bacterial infection that is not treated can cause a permanent damage.

More discussions about red
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References in periodicals archive ?
"The club tweeted that having two shades of red was a conscious decision.
Ford Motor Company (NYSE: F), a United States-based automaker, is asking dealers to stop taking orders for vehicles painted Tuxedo Black or certain shades of red in the United States.
so BEST OF THE BUNCH PYRACANTHA (FIRETHORN) These prickly evergreen shrubs are not only excellent specimens for keeping burglars at bay if planted on garden boundaries, but also provide fantastic colour in the form of their brilliant berries, in shades of red, orange and yellow, which last well into winter.
She says her "cool undertones" would be warmed by adopting shades of red or coral in her wardrobe and makeup bag and even turquoise to give a lift.
CRIMSON QUEEN - an arching, low-growing tree with finely-cut red-purple leaves which turn to shades of red. 4m (12ft).
Velvety eyeshadow textures impart a high-shine patina in a range of gold and rose hues, while lips captivate in shades of red, pink and beige for an overall creation of heroic beauty.
In area rugs, a variety of 6-foot rounds, with a heavy focus on autumnal shades of red, yellow and orange, have been added to the roster, as have rectangular pieces with seaside themes.
HAVE the vibrant cyclamen in shades of red pink and white which you planted last year been caught by frost?
THEY often flower longer and later than other bedding plants, but these elegant half-hardy annuals, which produce large, daisy-like flowers in shades of red, pink and white in summer to autumn, add a splash of colour to the border.
COSMOS They often flower longer and later than other bedding plants, but these elegant half-hardy annuals which produce large, daisy-like flowers in shades of red, pink and white in summer to autumn add a splash of colour to the summer border.
Six assorted scented pinks, beautifully perfumed and excellent for cutting, in shades of red, pink and white for an amazing pounds 4.99 Collection B.
And if you want to look drop red gorgeous, you'll have to be a lady in many shades of red.