injection

== English == === Etymology === Borrowed from Middle French injection, from Latin iniectio. The mathematical sense is from French injection, introduced by Nicolas Bourbaki in their treatise Éléments de mathématique. Equivalent to inject +‎ -ion. === Pronunciation === IPA(key): /ɪnˈd͡ʒɛk.ʃən/ Hyphenation: in‧jec‧tion Rhymes: -ɛkʃən === Noun === injection (countable and uncountable, plural injections) The act of injecting, or something that is injected. A specimen prepared by injection. (category theory) A morphism from either one of the two components of a coproduct to that coproduct. (construction) The act of inserting materials like concrete grout or gravel by using high pressure pumps. (figuratively) The supply of additional funding to a person or a business. (mathematics) A relation on sets (X,Y) that associates each element of Y with at most one element of X. Synonym: injective function (computer security) The insertion of program code into an application, URL, hardware, etc.; especially when malicious or when the target is not designed for such insertion. (space science) 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. (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. (medicine) Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle. (medicine) Congestion (of a body part, with blood or other fluid), such as hyperemia. (internal combustion engines) Fuel injection: the pressurized introduction of fuel into a cylinder. (steam engines) The act of throwing cold water into a condenser to produce a vacuum. (steam engines) The cold water thrown into a condenser to produce a vacuum. ==== Hyponyms ==== ==== Derived terms ==== ==== Related terms ==== inject ==== Translations ==== === See also === === References === injection on Wikipedia.Wikipedia == French == === Etymology === Learned borrowing from Latin iniectiō. === Pronunciation === IPA(key): /ɛ̃.ʒɛk.sjɔ̃/ === Noun === injection f (plural injections) injection (mathematics, logic, set theory) injection Coordinate terms: surjection, bijection ==== Derived terms ==== injectif ==== Related terms ==== injecter ==== Descendants ==== → Romanian: injecție → Turkish: enjeksiyon === Further reading === “injection”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012