at·​ro·​pine | \ ˈa-trə-ˌpēn How to pronounce atropine (audio) \

Definition of atropine

: a racemic mixture of hyoscyamine obtained from any of various solanaceous plants (such as belladonna) and used especially in the form of its sulfate for its anticholinergic effects (such as pupil dilation or inhibition of smooth muscle spasms)

Examples of atropine in a Sentence

Recent Examples on the Web In addition to the hyoscyamine, other medications used include: atropine eyedrops under the tongue; the antidepressant amitriptyline; and glycopyrrolate. Dr. Keith Roach, oregonlive, 3 Dec. 2021 The doctors then went back and analyzed blood taken from the patient at the time, finding the atropine at high concentrations in his blood too. Victoria Forster, Forbes, 1 June 2021 Using a technique called mass spectrometry, Robinson and his colleagues studied the chemical composition of four of the bundles and found the compounds scopolamine and atropine—the same chemical mixture that’s found in datura. Kiona N. Smith, Ars Technica, 24 Nov. 2020 The flower contains the alkaloids scopolamine and atropine, which are considered an entheogen—a psychoactive compound used in a spiritual context. David Shultz, Science | AAAS, 23 Nov. 2020 But all types of nerve agent poisoning can be treated with standard antidotes such as atropine and diazepam. Robert Chilcott, Ars Technica, 5 Sep. 2020 Doctors are providing Navalny atropine, a medicine used to treat some forms of nerve agent and pesticide poisonings. Miriam Berger, Washington Post, 26 Aug. 2020 Navalny is being treated with the antidote atropine, the hospital said. Star Tribune, 24 Aug. 2020 Doctors are using atropine, which is commonly used for nerve gas and pesticide poisonings, to treat Navalny. Mike Brest, Washington Examiner, 24 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'atropine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of atropine

1820, in the meaning defined above

History and Etymology for atropine

German Atropin, from New Latin Atropa, genus name of belladonna, from Greek Atropos, one of the three Fates

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The first known use of atropine was in 1820

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Last Updated

6 Dec 2021

Cite this Entry

“Atropine.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2021.

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More Definitions for atropine


at·​ro·​pine | \ ˈa-trə-ˌpēn How to pronounce atropine (audio) \

Medical Definition of atropine

: a racemic mixture of hyoscyamine usually obtained from belladonna and related plants of the family Solanaceae and used especially in the form of its hydrated sulfate (C17H23NO3)2·H2SO4·H2O for its anticholinergic effects (as relief of smooth muscle spasms or dilation of the pupil of the eye)

More from Merriam-Webster on atropine

Nglish: Translation of atropine for Spanish Speakers

Britannica English: Translation of atropine for Arabic Speakers Encyclopedia article about atropine


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