What does injection mean?

Definitions for injection
ɪnˈdʒɛk ʃənin·jec·tion

This dictionary definitions page includes all the possible meanings, example usage and translations of the word injection.

Princeton's WordNet

  1. injectionnoun

    the forceful insertion of a substance under pressure

  2. injection, injectantnoun

    any solution that is injected (as into the skin)

  3. injection, shotnoun

    the act of putting a liquid into the body by means of a syringe

    "the nurse gave him a flu shot"


  1. injectionnoun

    The act of injecting, or something that is injected.

  2. injectionnoun

    Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle.

  3. injectionnoun

    A function that maps distinct x in the domain to distinct y in the codomain; formally, a f:XY such that f(a) = f(b) implies a = b for any a, b in the domain.

  4. injectionnoun

    A relation on sets (X,Y) that associates each element of Y with at most one element of X.

  5. injectionnoun

    The addition of money to someone, or to a business.

Samuel Johnson's Dictionary

  1. Injectionnoun

    Etymology: injection, French; injectio, Latin.

    This salt powdered was, by the repeated injection of well-kindled charcoal, made to flash like melted nitre. Boyle.


  1. injection

    An injection, also known as a one-to-one function, is a type of function in mathematics where each element of the function's domain is paired with a unique element of the function's range. In simpler terms, it means that no two distinct elements in the domain map to the same element in the range. It is one form of a function's bijectivity.

Webster Dictionary

  1. Injectionnoun

    the act of injecting or throwing in; -- applied particularly to the forcible throwing in of a liquid, or aeriform body, by means of a syringe, pump, etc

  2. Injectionnoun

    that which is injected; especially, a liquid medicine thrown into a cavity of the body by a syringe or pipe; a clyster; an enema

  3. Injectionnoun

    the act or process of filling vessels, cavities, or tissues with a fluid or other substance

  4. Injectionnoun

    a specimen prepared by injection

  5. Injectionnoun

    the act of throwing cold water into a condenser to produce a vacuum

  6. Injectionnoun

    the cold water thrown into a condenser

  7. Etymology: [L. injectio : cf. F. injection.]


  1. Injection

    An injection is an infusion method of putting fluid into the body, usually with a syringe and a hollow needle which is pierced through the skin to a sufficient depth for the material to be administered into the body. An injection follows a parenteral route of administration; that is, administration via a route other than through the digestive tract. There are several methods of injection or infusion, including intradermal, subcutaneous, intramuscular, intravenous, intraosseous, and intraperitoneal. Long-acting forms of subcutaneous/intramuscular injections are available for various drugs, and are called depot injections. Injections are among the most common health care procedures, with at least 16 billion administered in developing and transitional countries each year. 95% of injections are administered in curative care, 3% are for immunization, and the rest for other purposes, such as blood transfusions.

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British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'injection' in Nouns Frequency: #2435

How to pronounce injection?

How to say injection in sign language?


  1. Chaldean Numerology

    The numerical value of injection in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of injection in Pythagorean Numerology is: 9

Examples of injection in a Sentence

  1. Julien Pinot:

    Random test at 11pm while Gasquet qualifies for the semis with an injection. Not the same treatment by the authorities and the media.

  2. Jakaya Kikwete:

    They said: 'If you take this girl to the hospital, if she gets an injection, then that jinni (spirit)... will... suck all her blood'.

  3. William Goodman:

    We know that the people using street drugs – illicit opioids – four out of five started with prescription pills, either they had them prescribed directly or they’re using diverted pills. And often what leads them to go from pills to injection of fentanyl or heroin is that it’s easier to get. You don’t need a prescription and it’s often much less expensive.

  4. Daniel Carder:

    It could be something very small, it can simply be a change in the fuel injection strategy. What might be realized is a penalty in fuel economy in order to get these systems more active, to lower the emissions levels.

  5. Anthony Fauci:

    OK, so both of the vaccines that we're talking about -- the Moderna vaccine and the Pfizer vaccine -- are what's called a prime boost, one injection followed in (three to four) weeks by another injection.

Popularity rank by frequency of use


Translations for injection

From our Multilingual Translation Dictionary

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"injection." Definitions.net. STANDS4 LLC, 2024. Web. 22 May 2024. <https://www.definitions.net/definition/injection>.

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    assist or encourage, usually in some wrongdoing
    A knead
    B flub
    C abet
    D aberrate

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