barium sulphate

barium sulphate
a barium salt, extremely insoluble in water, that is opaque to X-rays and is used as a contrast medium in radiography of the gastrointestinal tract (see barium enema, barium meal).

Medical dictionary. 2011.

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  • barium sulphate — noun 1. a white or colorless mineral (BaSO4); the main source of barium • Syn: ↑heavy spar, ↑barite, ↑barytes • Hypernyms: ↑mineral • Substance Meronyms: ↑barium, ↑Ba, ↑ …   Useful english dictionary

  • barium sulphate — a barium salt, extremely insoluble in water, that is opaque to X rays and is used as a contrast medium in radiography of the gastrointestinal tract (see barium enema, barium meal) …   The new mediacal dictionary

  • barium sulphate — /bɛəriəm ˈsʌlfeɪt/ (say bairreeuhm sulfayt) noun a fine white powder, BaSO4, used as a filler in textiles and as a radiopaque agent in X rays of the human body. Also, barium sulfate …  

  • barium meal — n a solution of barium sulfate that is swallowed by a patient to facilitate fluoroscopic or radiographic diagnosis * * * a technique for examining the oesophagus, stomach, and duodenum. The patient swallows barium sulphate to coat the lining of… …   Medical dictionary

  • barium — 1808, coined in Modern Latin from Gk. barys heavy; so called by its discoverer, English chemist Sir Humphrey Davy (1778 1829), because it was present in the mineral barytes heavy spar (barium sulphate), so named by Lavoisier from Gk. barys heavy… …   Etymology dictionary

  • barium meal — ► NOUN ▪ a preparation containing barium sulphate, opaque to X rays, which is swallowed so that the stomach or intestines can be studied radiologically …   English terms dictionary

  • Barium sulfate — chembox new ImageFile = Barium sulfate 2D.png ImageSize = 225px ImageName = Chemical structure of barium sulfate ImageFile1 = Barite unit cell 3D vdW.png ImageSize1 = 225px ImageName1 = 3D model of barium sulfate IUPACName = OtherNames = Section1 …   Wikipedia

  • Barium enema — A series of x rays of the lower intestine (colon) and rectum that are taken after the patient is given an enema with a white, chalky solution that contains barium. The barium outlines the intestines on the x rays. These x rays permit the… …   Medical dictionary

  • barium meal — noun : a solution of barium sulfate that is swallowed by a patient to facilitate fluoroscopic or roentgenographic diagnosis * * * barium meal noun A mixture of barium sulphate swallowed to render the alimentary canal opaque to X rays • • • Main… …   Useful english dictionary

  • barium sulfate — noun a white insoluble radiopaque powder used as a pigment • Syn: ↑barium sulphate, ↑blanc fixe • Hypernyms: ↑sulfate, ↑sulphate …   Useful english dictionary

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