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| red-riband | <zoology> The European red band fish, or fireflame. See Rend fish. Source: Websters Dictionary (01 Mar 1998) |
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| red-short | <chemistry> Hot-short; brittle when red-hot; said of certain kinds of iron. Red"-shortness. Source: Websters Dictionary (01 Mar 1998) |
| 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-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) |
| 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) |
| vital red | Trisodium salt of a sulfonated diazo dye (a ditolyl group diazotised to sulfonated aminonaphthalene residues), used as a vital stain. Synonym: brilliant vital red. (05 Mar 2000) |
| medicinal scarlet red | O-Tolylazo-o-tolylazo-beta-naphthol. An azo dye; a dark, brownish red powder, soluble in oils, fats, and chloroform, but insoluble in water; used in medicine as a vulnerary, in histology to stain fat in tissue sections and basic proteins at high pH, and in immunoelectrophoresis. Synonym: Biebrich scarlet red, medicinal scarlet red, scharlach red, Sudan IV. (05 Mar 2000) |
| 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) |
| cherry-red spot myoclonus syndrome | <syndrome> A neuronal storage disorder in children characterised by a cherry red spot at the macula, progressive myoclonus, and easily controlled seizures; the result of sialidase deficiency. Type 1 is characterised by normal body habitus, cherry red macula, myoclonus, and normal beta-galactosidase levels; type 2 by short stature, bony abnormalities, and deficient beta-galactosidase. Synonym: sialidosis. (05 Mar 2000) |
| chlorphenol red | An acid-base indicator (MW 423, pK 6.0): yellow at pH values below 5.1, red above 6.7. (05 Mar 2000) |
| cholera-red reaction | A test for cholera vibrio whereby the addition of 3 or 4 drops of sulfuric acid (concentrated, chemically pure) to an 18-hour-old bouillon or peptone culture of the organism produces a colour from rose-pink to claret. (05 Mar 2000) |