injection

  1. Noun.  The act of injecting, or something that is injected.
  2. Noun.  (context, specifically) Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle.
  3. Noun.  (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.
  4. Noun.  (mathematics) A relation on sets ''(X,Y)'' that associates each element of ''Y'' with at most one element of ''X''.
  5. Noun.  (figuratively) The addition of money to someone, or to a business.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.