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compound |
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compound /com·pound/ (kom´pownd) 1. made up of two or more parts or ingredients. 2. a substance made up of two or more materials. 3. in chemistry, a substance consisting of two or more elements in union. 4. to combine to form a whole; unite. clathrate compounds inclusion complexes in which molecules of one type are trapped within cavities of another substance, such as within a crystalline lattice structure or large molecule. inorganic compound a compound of chemical elements containing no carbon atoms. organic compound a compound of chemical elements containing carbon atoms. organometallic compound one in which carbon is linked to a metal. quaternary ammonium compound an organic compound containing a quaternary ammonium group, a nitrogen atom carrying a single positive charge bonded to four carbon atoms, e.g., choline.
compound Etymology: L, componere, to assemble , [kom′pound] 1 n, (in chemistry) a substance composed of two or more different elements, chemically combined in definite proportions, that cannot be separated by physical means. 2 n, any substance composed of two or more different ingredients. 3 adj, denoting an injury characterized by multiple factors, such as a compound fracture. 4 [kəmpound′] , v, to make a substance by combining ingredients, such as a pharmaceutic. compound, n 1. in chemistry, a distinct substance produced by chemical combination of two or more elements, the atoms of which are held together by chemical bonds. 2. in herbal medicine, a mixture of two or more herbs that act synergistically. See also element and molecule. compound, n 1. a combination of elements held together in a well-defined pattern by chemical bonds. In pharmacy, a mixture of drugs. 2. a thermoplastic substance used as a nonelastic impression material. compound A, B, E, F, S, n See corticoid, adrenal. compound cone, n a compound in the form of a cone or pyramid; used for impressions of individual preparations. compound, impression (modeling compound), n See compound. compound, intermetallic, n a compound of two metals in which the metals are only partially soluble in one another; exhibits a homogeneous grain structure, but the atoms do not intermingle randomly in all proportions. compound, modeling, n See compound, impression. compound, phenolic, n a mouthwash made from essential oils in combination with alcohol that is available over the counter and approved by the American Dental Association for use in controlling plaque and gingivitis. Also called essential oils mouthrinses. compound tracing stick, n a compound dispensed in stick form. compound, tray, n a compound similar to impression compound but with less flow and more viscosity when soft and more rigidity when chilled. compound 1. made up of diverse elements or ingredients. 2. a substance made up of two or more materials. 3. in chemistry, a substance made up of two or more elements in union. The elements are united chemically, which means that each of the original elements loses its individual characteristics once it has combined with the other element(s). compound 469 see isoflurane. compound 1080 see sodium fluoroacetate. compound 1081 see fluoroacetamide. compound granular corpuscle see gitter cells. compound interest rate the interest rate charged when compounding or discounting borrowed or loaned money. compound Clinical pharmacology verb To combine two or more active pharmacologics to produce a single preparation, often referred to as a dosage form. See Formulation. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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This paves the way for a new generation of compoundable HNBRs with valuable properties for use by end users. Stereon 842A pelletized multiblock linear copolymer is compoundable or dryblended with PS, PP, or PE to improve impact, flexibility, and tear strength. In Europe, the company is also devoting some effort to compoundable resins for shoe markets. |
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