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.

Recent Examples on the Web

As with all skin injection procedures, there is a risk of infection. — Vogue, "Celebrity Manicurist Deborah Lippmann on Beauty, Aging, and the Product That Changed her Relationship With her Hands," 1 Apr. 2019 Troy Clark received lethal injection Wednesday for torturing and drowning an East Texas woman in his bathtub and then stuffing her body into a barrel. — Fox News, "Texas inmate executed for 2000 killing of girlfriend," 28 Sep. 2018 This was far from standard fare in a state that has legalized firing squads when lethal injections aren’t available. — Nick Tabor, Daily Intelligencer, "What If Prosecutors Wanted to Keep People Out of Prison?," 27 Mar. 2018 The new law says that inmates can choose nitrogen hypoxia over lethal injection. — Mike Cason, AL.com, "Alabama's new method of execution has never been tried," 26 Mar. 2018 Shares of Asiana Airlines surged 30% Monday, the maximum daily increase allowed in South Korea, as investors cheered the prospect of a cash injection for the struggling business and a diminished role for patriarch Park Sam-koo and his family. ... — Kwanwoo Jun And Na-young Kim, WSJ, "South Korea’s Asiana Airlines Plans to Sell Stake to Appease Creditors," 15 Apr. 2019 One of the risks with using this product is unintentional injection into a blood vessel. — Vogue, "Celebrity Manicurist Deborah Lippmann on Beauty, Aging, and the Product That Changed her Relationship With her Hands," 1 Apr. 2019 Other patients may opt for Botox injections into the vocal cord (through the neck), which weakens the muscles and prevents them from spasming so tightly. — Sarah Jacoby, SELF, "Selma Blair Reveals Her MS Led to Spasmodic Dysphonia," 27 Feb. 2019 Insulin without injections Several projects aim to give needle relief to the country’s 30 million diabetes sufferers. — Mike Feibus, USA TODAY, "Afraid of needles? These start-ups are working on alternatives," 8 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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Last Updated

23 May 2019

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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

See the full definition for injection in the English Language Learners Dictionary

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