- 1. The incorporation of a solid, a liquid, or a gas in a liquid or noncrystalline solid resulting in a homogeneous single phase. See dispersion, suspension. 2. Generally, an aqueous s. of a nonvolatile substance. 3. In the language of the Pharmacopeia, an aqueous s. of a nonvolatile substance is called a s. or liquor; an aqueous s. of a volatile substance is a water (aqua); an alcoholic s. of a nonvolatile substance is a tincture (tinctura); an alcoholic s. of a volatile substance is a spirit (spiritus); a s. in vinegar is a vinegar (acetum); a s. in glycerin is a glycerol (glyceritum); a s. in wine is a wine (vinum); a s. of sugar in water is a syrup (syrupus); a s. of a mucilaginous substance is a mucilage (mucilago); a s. of an alkaloid or metallic oxide in oleic acid is an oleate (oleatum). 4. The termination of a disease by crisis. 5. A break, cut, or laceration of the solid tissues. See s. of contiguity, s. of continuity. SYN: solutio. [L. solutio]- amaranth s. a 1% s. of amaranth (trisodium naphthol sulfonic acid), a synthetic vivid red dye, stable in acid and intensified in sodium hydroxide s.; used as a red or pink colorant in liquid pharmaceuticals.- aqueous s. a s. containing water as the solvent; examples include lime water, rose water, saline s., and a large number of solutions intended for intravenous administration.- Benedict s. an aqueous s. of sodium citrate, sodium carbonate, and copper sulfate which changes from its normal blue color to orange, red, or yellow in the presence of a reducing sugar such as glucose. SEE ALSO: Benedict test for glucose.- Burow s. a preparation of aluminium subacetate and glacial acetic acid, used for its antiseptic and astringent action on the skin.- chemical s. s. (1).- s. of contiguity the breaking of contiguity; a dislocation or displacement of two normally contiguous parts.- s. of continuity division of bones or soft parts that are normally continuous, as by a fracture, a laceration, or an incision. SYN: dieresis.- disclosing s. a s. that selectively stains all soft debris, pellicle, and bacterial plaque on teeth; used as an aid in identifying bacterial plaque after rinsing with water.- Earle s. a tissue culture medium containing CaCl2, MgSO4, KCl, NaHCO3, NaCl, NaH2PO4 H2O, and glucose.- Fehling s. an alkaline copper tartrate s. formerly used for detection of reducing sugars. SYN: Fehling reagent.- ferric and ammonium acetate s. a clear, aromatic, reddish-brown liquid which has been used in iron-deficiency anemia in animals and man; a source of iron. SYN: Basham mixture.- Gallego differentiating s. a dilute s. of formaldehyde and acetic acid used in a modified Gram stain to differentiate and enhance the basic fuchsin binding to Gram-negative microorganisms.- Gey s. a salt s. usually used in combination with naturally occurring body substances ( e.g., blood serum, tissue extracts) and/or more complex chemically defined nutritive solutions for culturing animal cells.- Hanks s. a salt s. usually used in combination with naturally occurring body substances ( e.g., blood serum, tissue extracts) and/or more complex chemically defined nutritive solutions for culturing animal cells; two variations contain CaCl2, MgSO4 7H2O, KCl, KH2PO4, NaHCO3, NaCl, Na2HPO4 2H2O, and d-glucose.- Hartman s. a s. used to desensitize dentin in dental operations; contains thymol, ethyl alcohol, and sulfuric ether.- Krebs-Ringer s. a modification of Ringer s., prepared by mixing NaCl, KCl, CaCl2, MgSO4, and phosphate buffer, pH 7.4.- lactated Ringer s. a s. containing NaCl, sodium lactate, CaCl2(dihydrate), and KCl in distilled water; used for the same purposes as Ringer s.. SYN: Hartmann s..- Lange s. a colloidal gold s. used to demonstrate protein abnormalities in spinal fluid. See Lange test.- Locke solutions solutions containing, in varying amounts, NaCl, CaCl2, KCl, NaHCO3, and d-glucose; used for irrigating mammalian heart and other tissues, in laboratory experiments; also used in combination with naturally occurring body substances ( e.g., blood serum, tissue extracts) and/or more complex chemically defined nutritive solutions for culturing animal cells.- Locke-Ringer s. a s. containing NaCl, CaCl2, KCl, MgCl2, NaHCO3, d-glucose, and water; used in the laboratory for physiological and pharmacological experiments.- Lugol iodine s. an iodine-potassium iodide s. used as an oxidizing agent, for removal of mercurial fixation artifacts, and also in histochemistry and to stain amebas.- Monsel s. ferric subsulfate s. used to coagulate superficial bleeding such as that following skin biopsy.- ophthalmic solutions sterile solutions, free from foreign particles and suitably compounded and dispensed for instillation into the eye.- Ringer s. 1. a s. resembling the blood serum in its salt constituents; it contains 8.6 g of NaCl, 0.3 g of KCl, and 0.33 g of CaCl2 in each 1000 mL of distilled water; used as a fluid and electrolyte replenisher by intravenous infusion. 2. a salt s. usually used in combination with naturally occurring body substances ( e.g., blood serum, tissue extracts) and/or more complex chemically defined nutritive solutions for culturing animal cells. SYN: Ringer lactate. See Ringer injection.- saline s. 1. a s. of any salt; SYN: salt s.. 2. specifically, an isotonic sodium chloride s..; 0.85–0.9 per 100 mL of water.- saturated s. (sat. sol., sat. soln.) a s. that contains all of a substance capable of dissolving; a s. of a substance in equilibrium with an excess undissolved substance.- standard s., standardized s. a s. of known concentration, used as a standard of comparison or analysis.- supersaturated s. a s. containing more of the solid than the liquid would ordinarily dissolve; it is made by heating the solvent when the substance is added, and on cooling the latter is retained without precipitation; addition of a crystal or solid of any kind usually results in precipitation of the excess solute, leaving a saturated s..- Tyrode s. a modified Locke s.; it contains 8 g of NaCl, 0.2 g of KCl, 0.2 g of CaCl2, 0.1 g of MgCl2, 0.05 g of NaH2PO4, 1 g of NaHCO3, 1 g of d-glucose, and water to make 1000 mL; used to irrigate the peritoneal cavity, and in laboratory work.- Weigert iodine s. an iodine-potassium iodide mixture used as a reagent to alter crystal and methyl violet so that they are retained by certain bacteria and fungi.
* * *so·lu·tion sə-'lü-shən n1 a) an act or the process by which a solid, liquid, or gaseous substance is homogeneously mixed with a liquid or sometimes a gas or solid called also dissolutionb) a homogeneous mixture formed by this process2 a) a liquid containing a dissolved substance <an aqueous \solution>b) a liquid and usu. aqueous medicinal preparation with the solid ingredients solublec) the condition of being dissolved <a substance in \solution>
* * *so·lu·tion (sə-looґshən) [L. solutio] 1. a homogeneous mixture of one or more substances (solutes) dispersed molecularly in a sufficient quantity of dissolving medium (solvent). The solute may be gas, liquid, or solid; the solvent is usually liquid, but may be solid, as in a solid solution of copper in silver (sterling silver). 2. in pharmacology, a term used to denote a liquid preparation containing one or several soluble chemical substances usually dissolved in water and not, for various reasons, falling into another category (e.g., syrup, elixir). 3. he process of dissolving. 4. a loosening or separation.
Medical dictionary. 2011.