Viagra

[vahy-ag-ruh] Origin

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Pharmacology, Trademark.

a brand of sildenafil citrate, used to treat impotence.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To viagra

Collins

World English Dictionary

Viagra (vaɪˈæɡrə, viː-)

—n
	trademark a drug, sildenafil, that allows increased blood flow into the penis; used to treat erectile dysfunction in men

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

Viagra

1998, proprietary name of drug manufactured by Pfizer company.

Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage

Medical Dictionary

Viagra Vi·ag·ra (vī-āg'rə)
n.
A trademark used for the drug sildenafil citrate.

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