| red reflex | A triangular area at the anterior inferior part of the tympanic membrane, running from the umbo to the periphery, where there is seen a bright reflection of light. Synonym: cone of light, light reflex, Politzer's luminous cone, red reflex, Wilde's triangle. Malacarne's pyramid, a lobule on the undersurface of the cerebellum, the posterior portion of the vermis. (05 Mar 2000) |
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| red strawberry tongue | Clinical manifestation of Kawasaki's disease. (05 Mar 2000) |
| red sweat | Reddening of sweat, especially in the axilla, due to pigment produced by Streptomyces roseofulvis. See: chromidrosis. (05 Mar 2000) |
| red test | An obsolete test for renal function; after the patient has drunk a glass or two of water, 1 ml of a 0.6% solution of dye is injected hypodermically; the time between this injection and the appearance of a pink tinge in the urine as it falls into an alkaline solution is noted; the amount excreted in each of the next 2 hours is then estimated colourimetrically. Synonym: Geraghty's test, phthalein test, red test, Rowntree and Geraghty test. (05 Mar 2000) |
| red thrombus | A thrombus formed rapidly by the coagulation of stagnating blood, composed mainly of red blood cells rather than platelets. (05 Mar 2000) |
| red vision | An abnormality of vision in which all objects appear to be tinged with red. Synonym: red vision. Origin: erythro-+ G. Ops, eye (05 Mar 2000) |
| red wine | Claret, an alcoholic liquor made by fermenting grapes, the fruit of Vitis vinifera, with their skins (which imparts colour); has been used as a tonic. (05 Mar 2000) |
| red-cell aplasia, pure | Suppression of erythropoiesis with little or no abnormality of leukocyte or platelet production. (12 Dec 1998) |
| red-gum | 1. <medicine> An eruption of red pimples upon the face, neck, and arms, in early infancy; tooth rash; strophulus. 2. A name of rust on grain. See Rust. 3. Eucalyptus gum Origin: OE. Reed gounde; AS. Read red + gund matter, pus. Source: Websters Dictionary (01 Mar 1998) |
| red-handed | Having hands red with blood; in the very act, as if with red or bloody hands; said of a person taken in the act of homicide; hence, fresh from the commission of crime; as, he was taken red-hand or red-handed. Source: Websters Dictionary (01 Mar 1998) |
| red-riband | <zoology> The European red band fish, or fireflame. See Rend fish. Source: Websters Dictionary (01 Mar 1998) |
| red-short | <chemistry> Hot-short; brittle when red-hot; said of certain kinds of iron. Red"-shortness. Source: Websters Dictionary (01 Mar 1998) |
| red-tailed | Having a red tail. <zoology> Red-tailed hawk, a large North American hawk (Buteo borealis). When adult its tail is chestnut red. Synonym: hen hawck, and red-tailed buzzard. Source: Websters Dictionary (01 Mar 1998) |
| redback | <zoology> The dunlin. Source: Websters Dictionary (01 Mar 1998) |
| redbelly | <zoology> The char. Source: Websters Dictionary (01 Mar 1998) |
| pure red cell aplasia | A transitory arrest of red blood cell production which may occur in the course of a haemolytic anaemia, often preceded by infection, or as a complication of certain drugs; if the arrest persists anaemia may result. See: congenital hypoplastic anaemia. (05 Mar 2000) |
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| neutral red | <chemical> 3-amino-7-dimethylamino-2-methylphenazine hydrochloride. A vital dye used as an indicator and biological stain. Various adverse effects have been observed in biological systems. Pharmacological action: dyes, indicators and reagents. Chemical name: 2,8-Phenazinediamine, N8,N8,3-trimethyl-, monohydrochloride (12 Dec 1998) |
| Sudan red III | A red stain, (C6H5)N==N(C6H4)N==N(C10H6)OH, used for neutral fat in histologic technique; it also stains the fatty envelope of the tubercle bacillus. Synonym: Sudan red III. (05 Mar 2000) |
| Darrow red | A basic oxazin dye, C18H14N3O2Cl, used as a substitute for cresyl violet acetate in the staining of Nissl substance. Origin: Mary A. Darrow, U.S. Stain technologist, 1894-1973 (05 Mar 2000) |
| quinaldine red | A styrene-quinolinium iodide; used as a pH indicator (turns red at pH 3.2) in a 1% ethanol solution. (05 Mar 2000) |
| International Committee of the Red Cross | A neutral Swiss organization serving as an intermediary between contending forces in armed conflict, in civil war, or internal strife, to help victims receive protection and other humanitarian assistance under the Geneva Conventions in accordance with the fundamental principles of the Red Cross. (05 Mar 2000) |
| oil red O | 1-8-[4-(Dimethylphenylazo)dimethylphenylazo]-2-naphthalenol;a weakly acid diazo oil-soluble dye, used in histologic demonstration of neutral fats. (05 Mar 2000) |
| tanned red cells | Erythrocytes subjected to mild treatment with chemicals such as tannic acid so that they adsorb onto their surface soluble antigens; used in haemagglutination tests. (05 Mar 2000) |
| Tay's cherry-red spot | The ophthalmoscopic appearance of the normal choroid beneath the fovea centralis, appearing as a red spot surrounded by white retinal oedema in central artery closure or lipid infiltration in sphingolipidosis. Synonym: Tay's cherry-red spot. (05 Mar 2000) |
| toluylene red | <chemical> 3-amino-7-dimethylamino-2-methylphenazine hydrochloride. A vital dye used as an indicator and biological stain. Various adverse effects have been observed in biological systems. Pharmacological action: dyes, indicators and reagents. Chemical name: 2,8-Phenazinediamine, N8,N8,3-trimethyl-, monohydrochloride (12 Dec 1998) |
| trypan red | An azo dye formerly used in the treatment of trypanosomiasis. (05 Mar 2000) |
| turkey red | <botany> A plant of the Rubia (R. Tinctorum). The root is much used in dyeing red, and formerly was used in medicine. It is cultivated in France and Holland. See Rubiaceous. Madder is sometimes used in forming pigments, as lakes, etc, which receive their names from their colours; as. Madder yellow. Field madder, an annual European weed (Sherardia arvensis) resembling madder. Indian madder, the East Indian Rubia cordifolia, used in the East for dyeing; called also munjeet. Wild madder, Rubia peregrina of Europe; also the Galium Mollugo, a kind of bedstraw. Origin: OE. Mader, AS. Maedere; akin to Icel. Mara. Source: Websters Dictionary (01 Mar 1998) |
| League of Red Cross Societies | The international federation of national Red Cross and similar societies. (05 Mar 2000) |
| reduced |
decreased: made less in size or amount or degree well below normal (especially in price)
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| red blood cell |
a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus
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| red tide |
seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin
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| red wine |
wine having a red color derived from skins of dark-colored grapes
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| red-green color blindness |
red-green dichromacy: confusion of red and green
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| red | a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues |
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| red | bone marrow of children and some adult bones that is required for the formation of red blood cells |
| red | dry red Bordeaux or Bordeaux-like wine |
| red | brass with enough copper to give it a reddish tint |
| red | bryony having fleshy roots pale green flowers and very small red berries |
| red | a shrub buckeye of southern United States |
| red | compact head of purplish-red leaves |
| red | cabbage plant with a compact head of reddish purple leaves |
| red | biennial European catchfly having red or pink flowers |
| red | a strip of red carpeting laid down for dignitaries to walk on |
| red | fragrant reddish wood of any of various red cedar trees |
| red | tall tree of North American Pacific coast having foliage like cypress and cinnamon-red bark |