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A concretion formed in the alimentary canal of animals, and occasionally humans; formerly considered to be a useful medicine with magical properties and apparently still used for this purpose in some countries; according to the substance forming the ball, may be termed trichobezoar (hairball), trichophytobezoar (hair and vegetable fiber mixed), or phytobezoar (foodball). [Pers. padzahr, antidote]
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be·zoar 'bē-.zō(ə)r, -.zȯ(ə)r n any of various calculi found in the gastrointestinal organs esp. of ruminants called also bezoar stone
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n.
a mass of swallowed foreign material within the stomach. The material, which is usually swallowed by psychiatrically disturbed patients, accumulates and ultimately causes gastric obstruction. Its removal often requires a surgical operation. See also trichobezoar.
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be·zoar (beґzor) [Farsi pādzohr antidote to poison] a concretion of foreign material found in the gastrointestinal tract or urinary tract; types include trichobezoar (hair), phytobezoar (fruit and vegetable fibers), trichophytobezoar (hair mixed with plant fibers), and fungus ball.Medical dictionary. 2011.