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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 ?
robustus by coloration of the whole body (light blue with broad orange-red scale margins vs.
Researchers concluded that deepwater corals produce a fluorescent protein that can absorb blue light and in its place, generate an orange-red light.
Scarlet runner has big dark green leaves and a host of orange-red flowers that will produce edible beans.
A flat, orange-red translucent swatch, evocative of the color of the Nazi flag, has been painted on the picture's surface, while bloodlike drops of this material are splattered elsewhere over the photograph.
In the latest development, chemists have shown that microscopic particles of silicon suspended in a liquid also luminesce, giving off an orange-red light.
This glorious Tiger Lily produces splendid orange-red flowers with deep burgundy/black spots, more heavily spotted towards the centre of each petal.
It's worth growing 'Geranium', a smaller and more compact shrub rose, which produces orange-red flagon-shaped hips which are better than those on the wild variety.
Helenium Moerheim Beauty has vibrant orange-red daisy-like flowers with dark brown centres.
. If you love bold colour and want the reddest red, look for blue-red and orange-red shades of lipstick - these are the strongest reds.
Here is a scale of colors I've used for this purpose over the years: 0 (very blue); 1 (blue); 2 (blue-white); 3 (white); 4 (yellow-white); 5 (light yellow); 6 (deep yellow); 7 (light orange); 8 (deep orange); 9 (orange-red); 10 (red).
Mix zingy orange-red stemmed variety Midwinter Fire with crimson Sibirica for a hot look.
'Bandera': White and green leaves; orange-red flower.