sildenafil citrate

[sil-den-uh-fil]

noun Pharmacology.

a white crystalline powder, C22H30N6O4S, that temporarily normalizes erectile function of the penis by blocking an enzyme known to inhibit the production of a chemical that causes erections: used in the form of a pill to treat impotence.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018