Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A drug that inhibits phosphodiesterase, C23H32N6O4S, used in its hydrochloride form to treat erectile dysfunction by increasing the level of cyclic GMP, which increases blood flow to the erectile tissues.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A piperazine drug used to treat erectile dysfunction.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun virility drug (trade name Levitra) used to treat erectile dysfunction in men

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[var-, origin unknown + (sil)denafil.]

Examples

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