injection

Plural: injections

Noun

• the forceful insertion of a substance under pressure
• any solution that is injected (as into the skin)
• the act of putting a liquid into the body by means of a syringe
• The act of injecting, or something that is injected.
• A specimen prepared by injection.
• A morphism from either one of the two components of a coproduct to that coproduct.
• The act of inserting materials like concrete grout or gravel by using high pressure pumps.
• The supply of additional funding to a person or a business.
• A relation on sets (X,Y) that associates each element of Y with at most one element of X.
• The insertion of program code into an application, URL, hardware, etc.; especially when malicious or when the target is not designed for such insertion.
• The act of putting a spacecraft into a particular orbit, especially for changing a stable orbit into a transfer orbit, e.g. trans-lunar injection.
• 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.
• Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle.
• Congestion (of a body part, with blood or other fluid), such as hyperemia.
• Fuel injection: the pressurized introduction of fuel into a cylinder.
• The act of throwing cold water into a condenser to produce a vacuum.
• The cold water thrown into a condenser to produce a vacuum.

Examples

• a SQL injection exploit allowing a malicious user to modify a database query
• conjunctival injection
• direct injection
• The troubled business received a much-needed cash injection.
• tuned port injection

Synonyms

injectant, shot, injective function

Related Words

bijection, hypodermic, immunization, inject, jab, surjection