Primary

Primary or primaries may refer to:

Groups and labels

 * Primary (band), from Australia
 * Primary (musician), hip hop musician and record producer from South Korea
 * Primary Music, Israeli record label

Works

 * Primary (album) by Rubicon (2002)
 * "Primary" (song) by The Cure
 * "Primary", song by Spoon from the album Telephono

Other uses in arts, entertainment, and media

 * Primaries or primary beams, in E. E. Smith's science-fiction series Lensman
 * Primary (film), American political documentary (1960)

Computing

 * PRIMARY, an X Window selection
 * Primary data storage, computer technology used to retain digital data
 * Primary server, main server on the server farm

Education

 * Primary education, the first stage of compulsory education
 * Primary FRCA, academic examination for anaesthetists in the U.K.
 * Primary school, school providing primary education

Mathematics

 * p-group of prime power order
 * Primary decomposition into primary ideals
 * Primary ideals, concept in commutative algebra
 * Primary number, positive integer power of a prime number

Politics

 * Primary election, election by which a political party selects and nominates a candidate
 * Primary vote, the total of first-preference votes in the Australian electoral system

Science and mechanics

 * Primary (astronomy), the larger of two co-orbiting bodies
 * Primary (chemistry), term used in organic chemistry
 * Primary, the oldest period in the Geologic time scale (obsolete)
 * Primary, a stage in a thermonuclear explosive
 * Primary circuit, electrical circuit in a transformer that receives current, as opposed to secondary circuit
 * Primary field, type of field in conformal field theory
 * Primary mirror, principal light-gathering surface of a reflecting telescope
 * Primary power line, electric power transmission line fed to or from a transformer
 * Primary feathers, flight feathers attached to the manus ("hand") in the wings of birds
 * Primary color

Other uses

 * Primary (LDS Church), a children's Sunday School organization
 * Primary (musician) (born 1983), South Korean
 * Primary data (or raw data), a term for data collected from a source
 * Primary Flight Training, in the U.S. Navy
 * Primary source, original materials
 * Primary disease, a disease that is due to a root cause of illness
 * Christian Science practitioner