methacholine

English

Chemical structure of methacholine

Alternative forms

• metacholine

Etymology

From meth(yl) +‎ -a- +‎ choline.

Pronunciation

• (Received Pronunciation) IPA^(key): /mɛθ.əˈkəʊ.liːn/
• (General American) IPA^(key): /ˌmɛθ.əˈkoʊˌlin/

Noun

methacholine (uncountable)

1. (pharmacology) 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

Translations

synthetic choline ester

• Czech: metacholin m

References

• “methacholine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “methacholine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.