Medical Dictionary

methacholine

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noun metha·cho·line \ˌmeth-ə-ˈkō-ˌlēn\

Medical Definition of methacholine

  1. :  a parasympathomimetic drug administered in the form of its crystalline chloride C8H18ClNO2 especially to diagnose hypersensitivity of the bronchial air passages (as in asthma)—see mecholyl, provocholine


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