Medical Term:

bezoar

Pronunciation: bē′zōr

Definition: 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 (food ball).

[Pers. padzahr, antidote]

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