Definition of inject in English:

inject

Line breaks: in¦ject
Pronunciation: /ɪnˈdʒɛkt
 
/

verb

[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.
Synonyms
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.
Synonyms
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.

Origin

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'.

Derivatives

injectable

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.

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Pronunciation: ˌɪmpjʊˈdɪsɪti
noun
lack of modesty