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[in-jekt] /ɪnˈdʒɛkt/
verb (used with object)
to force (a fluid) into a passage, cavity, or tissue:
to inject a medicine into the veins.
to introduce (something new or different):
to inject humor into a situation.
to introduce arbitrarily or inappropriately; intrude.
to interject (a remark, suggestion, etc.), as into conversation.
Origin of inject
1590-1600; < Latin injectus past participle of in(j)icere to throw in, equivalent to in- in-2 + -jec- (combining form of jac- throw) + -tus past participle suffix
Related forms
reinject, verb (used with object)
uninjected, adjective


(in prescriptions) an injection.
< Latin injectiō Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for inject
  • Because digestive juices break down insulin, diabetics must inject it directly into the bloodstream.
  • inject a few raisins of conversation into the tasteless dough of existence.
  • And once again, the show did an admirable job of pausing the action now and again to inject some science.
  • Others have tried to inject compressed air into the stream.
  • It is also your responsibility as a writer to inject your voice in the letter.
  • Even more, when you inject people with the anti-morphine drug naloxone, the effects of acupuncture are reduced.
  • Elevating him would inject into the campaign more talk about the capture of government by various moneyed special interests.
  • Researchers have tried for decades to use tiny syringes to inject cells.
  • Flies that inject eggs into fire ants are being used to fight the invasive ants.
  • The jewel wasp is the only parasite known to inject its venom directly into its host's brain.
British Dictionary definitions for inject


verb (transitive)
(med) to introduce (a fluid) into (the body of a person or animal) by means of a syringe or similar instrument
(foll by into) to introduce (a new aspect or element): to inject humour into a scene
to interject (a comment, idea, etc)
to place (a rocket, satellite, etc) in orbit
Derived Forms
injectable, adjective
Word Origin
C17: from Latin injicere to throw in, from jacere to throw
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for inject

c.1600, from Latin iniectus "a casting on, throwing over," past participle of inicere "to throw in or on," from in- "in" (see in- (2)) + -icere, comb. form of iacere "to throw" (see jet (v.)). Related: Injectable; injected; injecting.

Online Etymology Dictionary, © 2010 Douglas Harper
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inject in Medicine

inject in·ject (ĭn-jěkt')
v. in·ject·ed, in·ject·ing, in·jects

  1. To introduce a substance, such as a drug or vaccine, into a body part.

  2. To treat by means of injection.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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