silicone


silicone
A polymer of organic silicon oxides, which may be a liquid, gel, or solid, depending on the extent of polymerization; formerly widely used in surgical implants, in intracorporeal tubes to conduct fluids, as dental impression material, as a grease or sealing substance, as a coating on the inside of glass vessels for blood collection, and in various ophthalmological procedures.
- s.-related disease problems disease allegedly resulting from release of s. into the body.

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sil·i·cone 'sil-ə-.kōn n any of various polymeric organic silicon compounds which are obtained as oils, greases, or plastics and some of which have been used as surgical implants

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sil·i·cone (silґĭ-kōn) a polymeric organic siloxane; any of a large group of organic compounds comprising alternating silicon and oxygen atoms linked to organic radicals, (R2SiO)n, the most common substituent being a methyl group. They occur as liquids, semisolids, or solids as a function of molecular weight and degree of polymerization, and range in viscosity from less than one to greater than one million centistokes. Functionally, silicones are usually divided into fluids (or oils), greases, waxes, resins, gums, and elastomers (silicone rubber), and uses have included wetting agents and surfactants, lubricants, defoaming agents, sealants, coolants, surgical membranes, contact lenses, implants, and dental impression materials. See also under oil.

Medical dictionary. 2011.

Look at other dictionaries:

  • silicone — [ silikon ] n. f. • 1906; autre sens 1874; de silicium ♦ Nom générique des dérivés du silicium renfermant des atomes d oxygène et des groupements organiques, et se présentant sous forme d huiles, de résines et d élastomères. Huiles de silicones,… …   Encyclopédie Universelle

  • silicone — coined 1863 in German from silico , comb. form indicating the presence of SILICON (Cf. silicon), + ONE (Cf. one) …   Etymology dictionary

  • silicone — s. f. Nome genérico de substâncias análogas aos corpos orgânicos, em que o silício substitui o carbono …   Dicionário da Língua Portuguesa

  • silicone — ► NOUN ▪ a durable synthetic resin with a structure based on chains of silicon and oxygen atoms with organic side chains …   English terms dictionary

  • silicone — [sil′ikōn΄] n. [ SILIC(O) + ONE] any of a group of polymerized, organic silicon compounds containing a basic structure of alternate oxygen and silicon atoms, usually with various organic groups attached to the chain: characterized by relatively… …   English World dictionary

  • Silicone — Not to be confused with the metalloid chemical element Silicon. Silicone caulk can be used as a basic sealant against water and air penetration. Silicones are inert, synthetic compounds with a variety of forms and uses. Typically heat resistant… …   Wikipedia

  • Silicone — Les silicones, ou polysiloxanes, sont des composés inorganiques formés d une chaine silicium oxygène (... Si O Si O Si O ...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour… …   Wikipédia en Français

  • silicone — /sil i kohn /, n. Chem. any of a number of polymers containing alternate silicon and oxygen atoms, as ( Si O Si O )n, whose properties are determined by the organic groups attached to the silicon atoms, and that are fluid, resinous, rubbery,… …   Universalium

  • Silicone — I Silicone   [zu Silicium], Singular Silicon das, s, Silikone, Polymere und Oligomere, die sich aus Silicium Sauerstoff Ketten mit organischen Resten an den Siliciumatomen aufbauen …   Universal-Lexikon

  • silicone — polisiloksanas statusas T sritis radioelektronika atitikmenys: angl. silicone; silicone compound vok. Silikon, n; Silikonverbindung, f rus. кремнийорганическое соединение, n; силикон, m pranc. composition silicone, f; silicone, m …   Radioelektronikos terminų žodynas

  • silicone — [[t]sɪ̱lɪkoʊn[/t]] N UNCOUNT: usu N n Silicone is a tough artificial substance made from silicon, which is used to make polishes, and also used in cosmetic surgery and plastic surgery. ...silicone lubricants. ...women who suffered health problems …   English dictionary


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