key
noun
/ki/
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/kiː/
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- (countable) An object designed to open and close a lock.
- An object designed to fit between two other objects (such as a shaft and a wheel) in a mechanism and maintain their relative orientation.
- A crucial step or requirement.
- A small guide explaining symbols or terminology, especially the legend on a map or chart.
- In musical instruments, one of the valve levers used to select notes, such as a lever opening a hole on a woodwind.
- (historical) A manual electrical switching device primarily used for the transmission of Morse code.
- (cryptography) A piece of information (e.g., a password or passphrase) used to encode or decode a message or messages.
- (databases) In a relational database, a field used as an index into another table (not necessarily unique).
- (computing) A value that uniquely identifies an entry in a container.
- (biology) A series of logically organized groups of discriminating information which aims to allow the user to correctly identify a taxon.
- (basketball) The free-throw lane together with the circle surrounding the free-throw line, the free-throw lane having formerly been narrower, giving the area the shape of a skeleton key hole.
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- (music) A scale or group of pitches constituting the basis of a musical composition.
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κλειδί,
πλήκτρο
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- (computing) One of several small, usually square buttons on a typewriter or computer keyboard, mostly corresponding to text characters.
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πλήκτρο
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- In instruments with a keyboard such as an organ or piano, one of the levers, or especially the exposed front end of it, which are depressed to cause a particular sound or note to be produced.
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πλήκτρο,
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key
adjective
/ki/
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/kiː/
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- Indispensable, supremely important.
- Important, salient.
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