Injection or injected may refer to:

Science and technology

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 contrapositi ...

, a mathematical function mapping distinct arguments to distinct values *

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, eve ...

, used in the petrochemical industry to insert chemicals, typically inhibitors, for proper mixture within a base chemical *

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 com ...

, a means of metering fuel into an internal combustion engine * Orbit injection, 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 * Injection well *

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

* Code injection, a security violation technique using unexpected program modification * Dependency injection, a programming design pattern, also referred to as inversion of control * Email injection, a security violation technique using web email forms * Fault injection, a software testing technique * Network injection, an attack on access points that are exposed to non-filtered network traffic *

SQL injection In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker). SQL in ...

, a security violation technique using database commands

Arts, entertainment and media

* ''Injected'' (album), a 1995 album by Phunk Junkeez * Injected (band), a rock band from Atlanta, Georgia * ''Injection'' (comics), an Image Comics science fiction series by Warren Ellis and Declan Shalvey * "Injection", song by Rise Against from ''

The Sufferer & the Witness ''The Sufferer & the Witness'' is the fourth studio album by American punk rock band Rise Against, released on July 4, 2006. A melodic hardcore album, it comprises thirteen tracks that focus on melody, catchy hooks, and rapid-paced tempo. Soci ...

'', 2006

Other uses

* Injection (economics), a financial boost to an economy *

Drug injection Drug injection is a method of introducing a drug into the bloodstream via a hollow hypodermic needle, which is pierced through the skin into the body (usually intravenously, but also at an intramuscular or subcutaneous location). Intravenous t ...

of recreational drugs

Science and technology

Computing

Arts, entertainment and media

Other uses

See also