Key

Look up key in Wiktionary, the free dictionary.

Key may refer to:

• Key (lock), device used to open a lock
• Key (cryptography), a piece of information that controls the operation of a cryptogaphy algorithm

Music

• Key (instrument), musical instruments have keys for tuning and keys for playing
• Key (music), a set of notes
• Key (Son, Ambulance album)
• Key signature, in musical notation

Computing

• Computer keyboard keys
• KeY, a software verification tool
• Unique key, a set of fields that uniquely identify any record in a database
• Superkey, a similar concept
• Candidate key, a minimal superkey
• Key (database), a set of database columns used in an index
• Key, which make up the key-value pairs of a hash table

Fiction

• The Key (novel), a novel in Marianne Curley's Guardians of Time trilogy
• Key (comics), a DC Comics supervillain
• Key (Marvel Comics), a fictional mutant character
• Key the Metal Idol, Japanese anime OVA series

Surnames

• Key (surname)
• Keys (surname)
• Keyes

Geography

• Key Island, Tasmania, Australia
• Florida Keys, an archipelago of about 1700 such islands in the southeast United States

Other uses

• Key or legend, a explanation of the symbols and colours used in a diagram
  • Key (map), a guide to a map's symbology
  • Key (chart), a guide to colours and symbols used in a data chart, graph, plot or diagram
• Key (basketball), also known as the shaded lane in a basketball court
• Key (company), a Japanese visual novel studio
• Key (engineering), a piece of metal made to be placed in a Keyway (engineering)
• Key (singer), a member of the band Shinee
• Keying (graphics), compositing image components, such as by using chroma keying
• Keying (vandalism), a type of vandalism involving paint scratching
• Keystone (architecture), the stone at the apex of an arch that holds the arch in place
• Key Bank, a bank headquartered in the Key Tower in Cleveland, Ohio
• Key Club, a worldwide student service organization
• Samara (fruit) or key, a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall
• House of Keys, the directly elected lower branch of Tynwald, the parliament of the Isle of Man

See also

Wikiquote has a collection of quotations related to: Key

Wikisource has the text of the 1911 Encyclopædia Britannica article Key.

• The Key (disambiguation)
• Telegraph key, the button used by a telegraph operator
• Skeleton key or Master key, a key altered to bypass wards placed inside a lock
• Chroma key, a method to superimpose several video layers using areas of a defined color as a mask
• Identification key, a method of deducing the correct species assignment of a living thing
• Churchkey, various kinds of bottle and can openers
• Keychain, small chain that connects a small item to a keyring
• Key frame, a frame made by an animator from which other frames are derived
• Key light, the primary light source that illuminates an image or scene
• Key plate, a plate which prints the detail in an image, often using the color black
• Keyline, a dark line separating color elements in four-color printing
• Cay, a small, low island
• Clef (from the French for "key"), the symbol that assigns note names to the lines and spaces of the musical staff
• Quay
• Key color (typically black) in the CMYK color model

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