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atropine Line breaks: at¦ro|pine
Pronunciation: /ˈatrəpiːn/

Definition of atropine in English:


[mass noun] Chemistry
A poisonous compound found in deadly nightshade and related plants. It is used in medicine as a muscle relaxant, e.g. in dilating the pupil of the eye.
  • An alkaloid; chemical formula: C17N23NO3
Example sentences
  • Before ocular surgery, phenylephrine is used with atropine to dilate the pupil.
  • Alkaloids are well known in human history for their pharmacological effects and include such well-known compounds as atropine, morphine, codeine, heroin, nicotine, caffeine, cocaine and quinine.
  • Strychnine, atropine, cocaine, certain snake venoms, and other poisons cause convulsions, resulting from altered nerve conduction in the brain and spinal cord.


Mid 19th century: modern Latin Atropa belladonna 'deadly nightshade', from Atropos + -ine4.

Definition of atropine in:
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