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From Latin iniectus, injectus, participle of iniciō, injiciō (I throw in), from in- + iaciō (I throw).


  • IPA(key): /ɪnˈdʒɛkt/
    • (file)
  • Rhymes: -ɛkt


inject (third-person singular simple present injects, present participle injecting, simple past and past participle injected)

  1. (transitive) To push or pump (something, especially fluids) into a cavity or passage.
    The nurse injected a painkilling drug into the veins of my forearm.
  2. (transitive) To introduce (something) suddenly or violently.
    Punk injected a much-needed sense of urgency into the British music scene.
  3. (transitive) To administer an injection to (someone or something), especially of medicine or drugs.
    Now lie back while we inject you with the anesthetic.
    to inject the blood vessels
  4. (intransitive) To take or be administered something by means of injection, especially medicine or drugs.
    It's been a week since I stopped injecting, and I'm still in withdrawal.
  5. (transitive, computing) To introduce (code) into an existing program or its memory space, often without tight integration and sometimes through a security vulnerability.
    • 1996 November 11, David Taillé <>, “Getting Process information”, in, Usenet[1], message-ID <>:
      Yes, you'll have to use CreateRemoteThread to "inject code" if you want information like the current directory of a process (at least on NT 3.5x).
    • 1999 August 23, Osvaldo Pinali Doederlein <>, “Java is Going to Be the Death of Java”, in, Usenet[2], message-ID <001b01beed13$76a66350$>:
      As soon as a virus programmer discovers that some popular ActiveX thing has a bug that can be exploited, e.g. with controlled crashes to inject code, it's going to be a disaster.
    • 2003, Ryan Russell, “The Thief No One Saw”, in Stealing the Network: How to Own the Box[3], →ISBN, page 146:
      A quick test to see if I can inject SQL data is to enter my username and password as 'a.
    • 2007, Jeremiah Grossman and Robert Hansen, “XSS Theory”, in XSS Attacks: Cross-Site Scripting Exploits and Defense[4], →ISBN, page 86:
      DOM XSS is an unusual method for injecting JavaScript into a user's browser.
    • 2010, Andrew Moore, “AJAX Explained: What It Does and Why You Should Consider Using It”, in Visual Studio 2010 All-in-One for Dummies[5], →ISBN, page 410:
      The AJAX controls inject the appropriate JavaScript code into the HTML output stream without you needing to code any JavaScript yourself.
  6. (obsolete, transitive) To cast or throw; used with on.

Related terms[edit]


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