methacholine
nounUK /mɛθ.əˈkəʊ.liːn/ · US /ˌmɛθ.əˈkoʊˌlin/
Etymology From meth(yl) + -a- + choline.
1
Medicine, Pharmacology, Sciences A choline derivative with parasympathomimetic activity that can induce bronchoconstriction in asthmatics and is used in tests of airway responsiveness; O-acetyl-β-methylcholine, C₈H₁₈NO₂⁺.
- Derived terms
- methacholine chloride