Definitions

1. noun

A salt of hydrofluoric acid, often used in the manufacture of toothpaste and in the prevention of tooth decay.

“The water supply was fluoridated to promote oral health among the local residents.”

2. verb

To add a substance, especially hydrofluoric acid, to something, especially water, in order to prevent tooth decay.

“The dentist explained that the community’s water supply was fluoridated to prevent tooth decay among children.”