Methacholine
//mɛθ.əˈkəʊ.liːn// noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 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⁺. uncountable
- 2 parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity wordnet
Synonyms
All synonymsEtymology
From meth(yl) + -a- + choline.
Related phrases
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.