Injection or injected may refer to:
Science and technology
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Injective function
In mathematics, an injective function (also known as injection, or one-to-one function) is a function that maps distinct elements of its domain to distinct elements; that is, implies . (Equivalently, implies in the equivalent contrapositiv ...
, a mathematical function mapping distinct arguments to distinct values
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Injection (medicine)
An injection (often and usually referred to as a "shot" in US English, a "jab" in UK English, or a "jag" in Scottish English and Scots) is the act of administering a liquid, especially a drug, into a person's body using a needle (usually a hyp ...
, insertion of liquid into the body with a syringe
* Injection, in broadcasting, the level at which a
subcarrier
A subcarrier is a sideband of a radio frequency carrier wave, which is modulated to send additional information. Examples include the provision of colour in a black and white television system or the provision of stereo in a monophonic radio broa ...
is sent by the transmitter, expressed as a percent of total modulation
* Injection
quill
A quill is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird. Quills were used for writing with ink before the invention of the dip pen, the metal- nibbed pen, the fountain pen, and, eventually ...
, used in the petrochemical industry to insert chemicals, typically inhibitors, for proper mixture within a base chemical
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Fuel injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines.
All comp ...
, a means of metering fuel into an internal combustion engine
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Orbit injection
In spaceflight, an orbital maneuver (otherwise known as a burn) is the use of propulsion systems to change the orbit of a spacecraft.
For spacecraft far from Earth (for example those in orbits around the Sun) an orbital maneuver is called a ' ...
, changing a stable orbit into a transfer orbit
* Injection, in construction, insertion of consolidation materials (i.e., cement grout mixtures,
gravel
Gravel is a loose aggregation of rock fragments. Gravel occurs naturally throughout the world as a result of sedimentary and erosive geologic processes; it is also produced in large quantities commercially as crushed stone.
Gravel is classifi ...
) by means of dry type rotary shortcrete high pressure pumps
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Injection well
An injection well is a device that places fluid deep underground into porous rock formations, such as sandstone or limestone, or into or below the shallow soil layer. The fluid may be water, wastewater, brine (salt water), or water mixed with indus ...
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Injection moulding
Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for ...
, a technique for making parts from plastic material
Computing
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Code injection, a security violation technique using unexpected program modification
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Dependency injection, a programming design pattern, also referred to as inversion of control
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Email injection, a security violation technique using web email forms
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Fault injection, a software testing technique
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Network injection, an attack on access points that are exposed to non-filtered network traffic
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SQL injection, a security violation technique using database commands
Arts, entertainment and media
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''Injected'' (album), a 1995 album by Phunk Junkeez
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Injected (band), a rock band from Atlanta, Georgia
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''Injection'' (comics), an Image Comics science fiction series by Warren Ellis and Declan Shalvey
* "Injection", song by Rise Against from ''
The Sufferer & the Witness'', 2006
Other uses
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Injection (economics), a financial boost to an economy
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Drug injection of recreational drugs
See also
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Injunction
An injunction is a legal and equitable remedy in the form of a special court order that compels a party to do or refrain from specific acts. ("The court of appeals ... has exclusive jurisdiction to enjoin, set aside, suspend (in whole or in pa ...
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Interjection
{{disambiguation