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Viagra

[vahy-ag-ruh]
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Pharmacology, Trademark.
  1. a brand of sildenafil citrate, used to treat impotence.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for viagra

Viagra

noun
  1. trademark a drug, sildenafil, that allows increased blood flow into the penis; used to treat erectile dysfunction in men
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for viagra

Viagra

n.

1998, proprietary name of drug manufactured by Pfizer company.

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Online Etymology Dictionary, © 2010 Douglas Harper

viagra in Medicine

Viagra

(vī-ăgrə)
  1. A trademark for the drug sildenafil citrate.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.