injection

noun
in·​jec·​tion | \in-ˈjek-shən \

Definition of injection 

1a : an act or instance of injecting

b : the placing of an artificial satellite or a spacecraft into an orbit or on a trajectory also : the time or place at which injection occurs

2 : something (such as a medication) that is injected

3 : a mathematical function that is a one-to-one mapping — compare bijection, surjection

Examples of injection in a Sentence

The medicine cannot be taken orally; it must be given by injection. an injection of a painkiller The struggling company needed an injection of cash.
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Recent Examples on the Web

Since Brooks’s death in 1982, more than 1,300 executions have been performed by lethal injection. Abdullah Shihipar, Teen Vogue, "Lethal Injection Drugs and the Death Penalty, Explained," 30 Oct. 2018 Jeremy Sagastegui, 27, was executed by lethal injection in 1998. Paige Cornwell, The Seattle Times, "List of inmates whose sentences are changed from death row to life in prison," 12 Oct. 2018 There have been five executions in the state since 1975, including two by hanging and three by lethal injection. Sara Randazzo, WSJ, "Washington’s Highest Court Strikes Down State’s Death Penalty," 11 Oct. 2018 Replacing injections with a patch Getting drugs into the eye is a challenge. Kiona N. Smith, Ars Technica, "Delivering drugs directly to the eye using microneedles that dissolve," 9 Nov. 2018 But the case was dropped after Florida switched to lethal injection. Travis Loller, The Seattle Times, "Electric chair builder worried Tennessee execution will fail," 31 Oct. 2018 According to the Senate Intelligence Committee, website attacks were as widespread as six states, typically using a simple technique called an SQL injection. Benjamin Wofford, Vox, "The midterms are already hacked. You just don’t know it yet.," 25 Oct. 2018 In another, self-esteem is only obtainable via injection in a post-apocalyptic school district, while in the collection’s title story, a salesman learns to translate the peculiar dialect of zombie-like Black Friday shoppers. Andrew Liptak, The Verge, "10 new sci-fi and fantasy books to check out for the rest of October," 15 Oct. 2018 Nevada is required by law to use lethal injection for executions and some of the batches on hand are set to expire soon. Ken Ritter And Michelle L. Price, Time, "Nevada Delays Its First Execution in 12 Years After a Drug Company Objects," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'injection.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of injection

15th century, in the meaning defined at sense 1a

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Statistics for injection

Last Updated

5 Dec 2018

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Time Traveler for injection

The first known use of injection was in the 15th century

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More Definitions for injection

injection

noun

English Language Learners Definition of injection

: the act or process of forcing a liquid medicine or drug into someone or something by using a special needle

: the act or process of forcing a liquid into something

: the addition of something (such as money) that is needed to support something

injection

noun
in·​jec·​tion | \in-ˈjek-shən \

Kids Definition of injection

: an act or instance of forcing a fluid (as a medicine) into a part of the body by using a special needle Insulin can be given by injection.

injection

noun
in·​jec·​tion | \in-ˈjek-shən \

Medical Definition of injection 

1a : the act or an instance of injecting a drug or other substance into the body

b : a solution (as of a drug) intended for injection (as by catheter or hypodermic syringe) either under or through the skin or into the tissues, a vein, or a body cavity

c : an act or process of injecting vessels or tissues also : a specimen prepared by injection

2 : the state of being injected : congestion — see circumcorneal injection

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More from Merriam-Webster on injection

Rhyming Dictionary: Words that rhyme with injection

Spanish Central: Translation of injection

Nglish: Translation of injection for Spanish Speakers

Britannica English: Translation of injection for Arabic Speakers

Britannica.com: Encyclopedia article about injection

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