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.
As of 2014, the population was 24,483. It is the county seat of Fairfax County. Although it is an enclave of Fairfax County, the two are separate political entities. Situated in Northern Virginia, Fairfax is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.Fairfax is 16 miles (25 kilometers) southwest of Washington, D.C. Washington Metro's Orange Line serves Fairfax through its Vienna Station.airfax County's Government Center is west of the City of Fairfax. Fairfax County contains an exclave located in the central area of the City of Fairfax, in which many county facilities (including the courthouse and jail) are located.