| violet-tip | <zoology> A very handsome American butterfly (Polygonia interrogationis). Its wings are mottled with various shades of red and brown and have violet tips. Source: Websters Dictionary (01 Mar 1998) |
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| visual violet | A visual pigment, composed of 11-cis-retinal bound to an opsin, found in the cones of the retina. Synonym: visual violet. Origin: G. Ion, violet, + ops, eye, + -in (05 Mar 2000) |
| methyl violet | Mixtures of tetra-, penta-, or pararosanilin which vary in shade of violet depending on the extent of methylation (designated R for reddish shades, B for bluish shades); the hexamethyl compound is known as crystal violet, the pentamenthyl compound as methyl violet 6B. As stains, methyl violet has many bacteriological, histological, and cytological applications. (05 Mar 2000) |
| water violet | <botany> See Violet. Source: Websters Dictionary (01 Mar 1998) |
| cresyl violet acetate | A metachromatic basic oxazin dye, C18H15N3O3, used as a stain for nuclei and Nissl substance; related to German derived dye known as cresyl echt violet or cresyl fast violet. (05 Mar 2000) |
| crystal violet | Hexamethylpararosanilin chloride;a compound that has been used in the external treatment of burns, wounds, and fungal infections of skin and mucous membranes, and internally for pinworm and certain fluke infections; used also as a stain for chromatin, amyloid, platelets in blood, fibrin, and neuroglia, and to differentiate among bacteria. Synonym: methylrosaniline chloride. (05 Mar 2000) |
| crystal violet vaccine | See: hog cholera vaccines. (05 Mar 2000) |
| Ehrlich's aniline crystal violet stain | <technique> A stain for Gram-positive bacteria. (05 Mar 2000) |
| Lauth's violet | <chemistry> An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder. Synonym: phenylene violet. Origin: Gr. Brimstone, sulphur. Source: Websters Dictionary (01 Mar 1998) |
| acetic solution | A vinegar. (05 Mar 2000) |
| amaranth solution | A 1% solution of amaranth (trisodium naphthol sulfonic acid), a synthetic vivid red dye, stable in acid and intensified in sodium hydroxide solution; used as a red or pink colourant in liquid pharmaceuticals. (05 Mar 2000) |
| aqueous solution | <chemistry> A solution in which water is the dissolving medium or solvent. (09 Jan 1998) |
| barium solution | A liquid containing barium sulfate, which shows up on X-rays. It outlines organs of the body so they can be seen on X-ray film. (12 Dec 1998) |
| Benedict's solution | <chemistry> An aqueous solution of sodium citrate, sodium carbonate, and copper sulfate which changes from its normal blue colour to orange, red, or yellow in the presence of a reducing sugar such as glucose. See: Benedict's test for glucose. (14 Aug 2000) |
| Burow's solution | A preparation of aluminium subacetate and glacial acetic acid, used for its antiseptic and astringent action on the skin. (05 Mar 2000) |