injection
/ɪnˈd͡ʒɛk.ʃən/ noun
Forms injections
- noun The act of injecting, or something that is injected.
- noun A specimen prepared by injection.
- noun (category theory) A morphism from either one of the two components of a coproduct to that coproduct.
- noun (construction) The act of inserting materials like concrete grout or gravel by using high pressure pumps.
- noun (figuratively) The supply of additional funding to a person or a business. “The troubled business received a much-needed cash injection.”
- noun (mathematics) A relation on sets (X,Y) that associates each element of Y with at most one element of X.
- noun (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. “a SQL injection exploit allowing a malicious user to modify a database query”
- noun (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.
Synonyms
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.
Webster’s 1913
- noun The act of injecting or throwing in; --applied particularly to the forcible throwing in of a liquid, or aëriform body, by means of a syringe, pump, etc.
- noun That which is injected; especially, a liquid medicine thrown into a cavity of the body by a syringe or pipe; a clyster; an enema.
Etymology [L. injectio : cf.F. injection.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “injection”, CC BY-SA 4.0. Details