Word.ws English Dictionary

methacholine

UK/mɛθ.əˈkəʊ.liːn/US/ˌmɛθ.əˈkoʊˌlin/

methacholine noun: 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⁺.

methacholine: a choline derivative with parasympathomimetic activity that can induce bronchoconstriction in...
Image: Fvasconcellos, Public domain, via Wikimedia Commons

Noun

methacholine (uncountable)

  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⁺.

Forms of methacholine

alternative formmetacholine

Origin of methacholine

From meth(yl) + -a- + choline.

Words formed from methacholine

  • methacholine chloride

Questions about methacholine

What does methacholine mean?
Methacholine means 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⁺.
What part of speech is methacholine?
Methacholine is a noun.
How do you pronounce methacholine?
Methacholine is pronounced /mɛθ.əˈkəʊ.liːn/ (UK).

Words near methacholine in the dictionary

  1. meth mouth
  2. meth mouths
  3. meth-
  4. Meth.
  5. methacarn
  6. methacholine
  7. methacrolein
  8. methacrylaldehyde
  9. methacrylamide
  10. methacrylate
  11. methacrylated

Source and license

Adapted from Wiktionary: methacholine (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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