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Meaning of INJECTION

Pronunciation:  in'jekshun

WordNet Dictionary
  1. [n]  the forceful insertion of a substance under pressure
  2. [n]  the act of putting a liquid into the body by means of a syringe; "the nurse gave him a flu shot"
  3. [n]  any solution that is injected (as into the skin)

INJECTION is a 9 letter word that starts with I.


 Synonyms: injectant, shot
 See Also: insertion, intradermal injection, intramuscular injection, intravenous injection, introduction, intromission, medical aid, medical care, solution, subcutaneous injection



Webster's 1913 Dictionary
\In*jec"tion\, n. [L. injectio : cf.F. injection.]
1. The act of injecting or throwing in; -- applied
   particularly to the forcible throwing in of a liquid, or
   a["e]riform body, by means of a syringe, pump, etc.

2. That which is injected; especially, a liquid medicine
   thrown into a cavity of the body by a syringe or pipe; a
   clyster; an enema. --Mayne.

3. (Anat.)
   (a) The act or process of filling vessels, cavities, or
       tissues with a fluid or other substance.
   (b) A specimen prepared by injection.

4. (Steam Eng.)
   (a) The act of throwing cold water into a condenser to
       produce a vacuum.
   (b) The cold water thrown into a condenser.

{Injection cock}, or {Injection valve} (Steam Eng.), the cock
   or valve through which cold water is admitted into a

{Injection condenser}. See under {Condenser}.

{Injection pipe}, the pipe through which cold water is
   through into the condenser of a steam engine.

Computing Dictionary

1. 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. 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.

Medical Dictionary
 Definition: Using a syringe and needle to push fluids or drugs into the body; often called a "shot". The needle is positioned into the tissue under the skin (subcutaneous), into a vein (intravenous), or into a muscle (intramuscular).
Dream Dictionary
 Definition: Dreaming that you are being injected for health reasons, suggests your need for healing behavior/ideas/attitudes. You need to develop yourself on a mental and spiritual level. Dreaming that someone is forcibly injecting you, represents your negative attitudes about a particular situation/person. It also indicates the influence of peer pressure working against you. You are recognizing that someone is forcing their negative and unwelcome views/values on you.
Thesaurus Terms
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