ALL meanings of injection
in·jec·tion
I i - noun injection the act of injecting. 1
- noun injection something that is injected. 1
- noun injection a liquid injected into the body, especially for medicinal purposes, as a hypodermic or an enema. 1
- noun injection state of being hyperemic or bloodshot. 1
- noun injection Mathematics. a one-to-one function. 1
- noun injection Also called insertion. Aerospace. the process of putting a spacecraft into orbit or some other desired trajectory. 1
- noun injection An instance of injecting or being injected. 1
- noun Definition of injection in Technology 1. (mathematics) A function, f : A -> B, is injective or one-one, or is an injection, if and only if for all a, b in A, f(a) = f(b) => a = b. I.e. no two different inputs give the same output (contrast many-to-one). This is sometimes called an embedding. Only injective functions have left inverses f' where f'(f(x)) = x, since if f were not an injection, there would be elements of B for which the value of f' was not unique. If an injective function is also a surjection then is it a bijection. 2. (reduction) An injection function is one which takes objects of type T and returns objects of type C(T) where C is some type constructor. An example is f x = (x, 0). The opposite of an injection function is a projection function which extracts a component of a constructed object, e.g. fst (x,y) = x. We say that f injects its argument into the data type and fst projects it out. 1
- noun injection medicine administered by needle 1
- noun injection inoculation, vaccination 1
- noun injection addition of sth beneficial 1
- countable noun injection If you have an injection, a doctor or nurse puts a medicine into your body using a device with a needle called a syringe. 0
- countable noun injection An injection of money or resources into an organization is the act of providing it with more money or resources, to help it become more efficient or profitable. 0
- noun injection fluid injected into the body, esp for medicinal purposes 0
- noun injection something injected 0
- noun injection the act of injecting 0
- noun injection the act or process of introducing fluid under pressure, such as fuel into the combustion chamber of an engine 0
- noun injection (as modifier) 0
- noun injection a function or mapping for which f(x) = f(y) only if x = y 0
- noun injection an act or instance of injecting 0
- noun injection a liquid injected into the body 0
- noun injection a fuel under pressure forced into a combustion chamber 0
- noun injection Injection is the process of inserting water or gas into a reservoir to pressurize it and displace hydrocarbons. 0
- noun injection The act of injecting, or something that is injected. 0
- noun injection (specifically, medicine) Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle. 0
- noun injection (set theory) A function that maps distinct x in the domain to distinct y in the codomain; formally, a f: X → Y such that f(a) = f(b) implies a = b for any a, b in the domain. 0
- noun injection (mathematics) A relation on sets (X,Y) that associates each element of Y with at most one element of X. 0
- noun injection (figuratively) The addition of money to someone, or to a business. 0
- noun injection (programming) The insertion of program code into an application, URL, hardware, etc.; especially when malicious or when the target is not designed for such insertion. 0
- noun injection A specimen prepared by injection. 0
- noun injection (steam engines) The act of throwing cold water into a condenser to produce a vacuum. 0
- noun injection (steam engines) The cold water thrown into a condenser to produce a vacuum. 0
- noun injection (category theory) A morphism from either one of the two components of a coproduct to that coproduct. 0
- noun injection (Contruction) The act of inserting materials like concrete grout or gravel by using high pressure pumps. 0