Dictionary of Cancer Terms
View in Spanish: Fluoruro
Fluoride (FLOOR-ide)
A form of the element fluorine that helps prevent tooth decay. Fluoride may be naturally present in drinking water or may be added to it. Fluoride may also be put directly on the teeth, as a gel, toothpaste, or a rinse.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.