Dictionary
pro•phy•lac•tic
Pronunciation: (prō"fu-lak'tik, prof"u-), [key]—
adj.
1. defending or protecting from disease or infection, as a drug.
2. preventive or protective.
—
n.
1. Med.a prophylactic medicine or measure.
2. a preventive.
3. a device, usually a rubber sheath, used to prevent conception or venereal infection; condom.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.