Definition of fluoride for English Language Learners. : a chemical that is sometimes added to drinking water and toothpaste to help keep teeth healthy.
Fairfax is an incorporated town in Marin County, California, United States. Fairfax is located 3.25 miles (5.2 km) west-northwest of San Rafael, at an elevation of 115 feet (35 m). The population is 7,441 at the 2010 census. Fairfax is the only town in America that holds a Green Party majority in the town council.
Fairfax was officially renamed the Town of Fairfax in 1859. It was incorporated as a town 1874. It was incorporated as a city in 1961 by court order. Under Virginia law the city was separated from Fairfax County (though it remains the county seat).