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belladonna

[bel-uh-don-uh] /ˌbɛl əˈdɒn ə/
noun
1.
Also called deadly nightshade. a poisonous plant, Atropa belladonna, of the nightshade family, having purplish-red flowers and black berries.
2.
Pharmacology. a drug from the leaves and root of this plant, containing atropine and related alkaloids: used in medicine to check secretions and spasms, to relieve pain or dizziness, and as a cardiac and respiratory stimulant.
Origin
1590-1600
1590-1600; < Italian bella donna literally, fair lady (so called because it is said to have been used by women to dilate the pupils of the eyes and to create an artificial pallor). See belle, donna
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for belladonnas

belladonna

/ˌbɛləˈdɒnə/
noun
1.
either of two alkaloid drugs, atropine or hyoscyamine, obtained from the leaves and roots of the deadly nightshade
2.
another name for deadly nightshade
Word Origin
C16: from Italian, literally: beautiful lady; supposed to refer to its use by women as a cosmetic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for belladonnas

belladonna

n.

1590s, "deadly nightshade" (Atropa belladonna), from Italian, literally "fair lady;" the plant so called supposedly because women made cosmetic eye-drops from its juice (an 18c. explanation; atropic acid, found in the plant, has a well-known property of dilating the pupils) or because it was used to poison beautiful women. Perhaps a folk etymology alteration; Gamillscheg suggests ultimately of Gaulish origin.

Online Etymology Dictionary, © 2010 Douglas Harper
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belladonnas in Medicine

belladonna bel·la·don·na (běl'ə-dŏn'ə)
n.

  1. A poisonous Eurasian perennial herb having usually solitary, purplish-brown, bell-shaped flowers and glossy black berries. Also called deadly nightshade.

  2. An alkaloidal extract or tincture derived from this plant.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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belladonnas in Science
belladonna
  (běl'ə-dŏn'ə)   
A preparation of the dried leaves or roots of deadly nightshade or related plants in the genus Belladonna, once used as a medicine. Belladonna contains several alkaloids that affect the nervous system by blocking the effects of acetylcholine.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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