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atropine
noun
at·ro·pine
ˈa-trə-ˌpēn
: 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
The plant contains compounds like scopolamine and atropine, two natural products known to have medicinal properties.
—Mary Choy, Health, 9 Oct. 2024
Belladonna contains atropine, which blocks cisapride from helping with the motility of your gastrointestinal tract.
—Mary Choy, Health, 9 Oct. 2024
Children are undergoing treatment with atropine eye drops, which in some reports diminishes the shift toward myopia over time in the school-age years.
—Gary Stix, Scientific American, 1 Oct. 2024
There are treatments available to help slow the progression of myopia, including prescription atropine eye drops, special soft disposable contact lenses called MiSight, and hard contacts worn overnight known as orthokeratology, or ortho-K.
—Maria Godoy, NPR, 13 May 2024
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Word History
Etymology
German Atropin, from New Latin Atropa, genus name of belladonna, from Greek Atropos, one of the three Fates
First Known Use
1820, in the meaning defined above
Dictionary Entries Near atropine
Cite this Entry
“Atropine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/atropine. Accessed 22 Dec. 2024.
Kids Definition
atropine
noun
at·ro·pine
ˈa-trə-ˌpēn
: a poisonous white compound from belladonna and related plants used especially to relieve spasms and to dilate the pupil of the eye
Medical Definition
atropine
noun
at·ro·pine
ˈa-trə-ˌpēn
: 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
Britannica.com: Encyclopedia article about atropine
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