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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 ?
Red Planet Manila The Fort is being developed as a 245-room hotel located in the prime Metro Manila business district of Bonifacio Global City and shall open by 2019.
Explaining the InSight Mars mission, Jim Green, director of planetary science at Nasa, said in a blog: "Our next step in the journey to Mars is another fantastic mission to the surface...By participating in this opportunity to send your name aboard InSight to the Red Planet, you're showing that you're part of that journey and the future of space exploration."
The multi-purpose spacecraft was launched in August 2005 and reached Martian orbit seven months later joining five other spacecraft either in orbit or on the red planet's surface.
In addition to the existing portfolio, Red Planet will be opening the new brand's flagship properties in Tokyo and Bangkok this year.
Red Planet earlier set the launch of its ninth branch yesterday-the 200-room Tune Hotel Aseana City in Paranaque City.
Inspired by classic adventure games, Red Planet Rex will bring the old school text-based adventure to mobile gaming with patent pending voice response technology.
Summary: Nasa's Mars rover, Curiosity, has photographed a Martian eclipse from the surface of the Red Planet.
Destination Mars; new explorations of the Red Planet.
For centuries humans have been fascinated with Mars, and modern technology has increased our knowledge of the Red Planet immeasurably.
Cars on Mars: Roving the Red Planet (ISBN: 978-1-57091-462-1) is a wonderful addition to any elementary or middle school classroom library being accessed by students with an affinity for space exploration or robotics.
Hey Mars lovers, here's an excellent account of the people who pushed NASA to send space probes to the Red Planet and the scientists who made this world come alive for us.
This was one of the final discoveries the lander made during its five-month mission researching the history of water on the Red Planet.