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.

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

reinject, verb (used with object)
uninjected, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
inject (ɪnˈdʒɛkt)
1.  med to introduce (a fluid) into (the body of a person or animal) by means of a syringe or similar instrument
2.  (foll by into) to introduce (a new aspect or element): to inject humour into a scene
3.  to interject (a comment, idea, etc)
4.  to place (a rocket, satellite, etc) in orbit
[C17: from Latin injicere to throw in, from jacere to throw]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

c.1600, from L. injectus, pp. of injicere "to throw in or on," from in- "in" + -icere, comb. form of jacere "to throw." Injection "forcing a fluid into a body" (with a syringe, etc.) is recorded from 1540s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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.

injected in·ject·ed (ĭn-jěk'tĭd)

  1. Of or relating to a substance introduced into the body.

  2. Of or relating to a blood vessel that is visibly distended with blood.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences for injected
Animals injected with large doses of cerium have died due to cardiovascular collapse.
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