Definition of inject in English:


Line breaks: in¦ject
Pronunciation: /ɪnˈdʒɛkt


[with object]
  • 1Introduce (a liquid, especially a drug or vaccine) into the body with a syringe: the doctor injected a painkilling drug
    More example sentences
    • The anaesthetist can then use the cannula to inject anaesthetic or painkilling drugs directly into the epidural space.
    • In each case, the drug user had been injecting heroin into subcutaneous tissue.
    • He became known for using a syringe to inject liquids and wax into blood vessels.
  • 1.1Administer a drug or medicine by syringe to (a person or animal): he was forcibly injected with a sedative
    More example sentences
    • Yet, minutes later, she was injected with the very same drug!
    • You were injected with a drug: a poison really, that reacted badly to the one used on you in Echo Base, and it was counteracting the medicine you needed.
    • After an hour or so, he is injected with a drug that makes him violently sick for an hour or two.
  • 1.2 [no object] Inject oneself with a narcotic drug, especially habitually: people who want to stop injecting
    More example sentences
    • The purple ultra violet lighting stops drug abusers injecting because they are unable to see their veins.
    • She's a former heroin addict who, six months after she stopped injecting, is getting her life back together.
    • She added that none of the three was able to raise the alarm suggests that they died quickly after injecting and that the drugs could kill within moments.
  • 2Introduce (something) under pressure into a passage, cavity, or solid material: inject the foam and allow it to expand
    More example sentences
    • The seawater stream into which the combustion gas is injected is under pressure via the head of water exerted by the seawater reservoir.
    • The graphite line includes an area at the edge of the panel through which air is injected at high pressure.
    • A polyurethane resin is injected into the cavity.
    insert, introduce, place, push, force, drive, shoot, feed
  • 2.1 Physics Introduce or feed (a current, beam of particles, etc.) into a substance or device.
    More example sentences
    • In these cases it is possible to probe the interior of a vessel by injecting currents and then measuring the voltages at its walls with electrodes.
    • The NIST researchers injected current from a 40-nanometer-wide contact on top of a large magnetic layer.
    • From there, these negative ions will be energized to about one billion electron volts in a one-millisecond long pulsed beam and injected into an accumulator ring.
  • 3Introduce (a new or different element) into something: she tried to inject scorn into her tone
    More example sentences
    • A divisive element had been injected into the movement during its last phase when the British rulers had found that it was not possible for them to hold any longer.
    • Something different has been injected into this fight.
    • In the 16th century an element of drama was injected into these court entertainments.
  • 4Place (a spacecraft or other object) into an orbit or trajectory: many meteoroids are injected into hyperbolic orbits
    More example sentences
    • The satellite is to be injected into a Geosynchronous Transfer Orbit about 17 minutes after the lift-off.



adjective & noun
More example sentences
  • But there is a display dedicated to future methods, containing research-stage items such as the male pill, further injectables and high-tech ovulation thermometers.
  • The company's specialty pharmaceutical products include generic injectables used in such areas as anesthesia, cardiovascular, infectious diseases and pain management.
  • The mother of all injectables, Botox, is not a filler as such: it's a toxin that paralyses facial muscles and smooths wrinkles.


late 16th century (in the sense 'throw or cast on something'): from Latin inject- 'thrown in', from the verb inicere, from in- 'into' + jacere 'throw'.

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