Definition of injection
1a : an act or instance of injectingb : 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
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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 of injection from the Web
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The standard model has one powertrain choice of a 252-horsepower, turbocharged and direct-injection 2.0-liter four-cylinder engine with 273 foot-pounds of torque from 1,600-4,500 rpm.
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Meanwhile, liquidity conditions are tightening again, with overnight repurchase rates jumping despite a sizeable injection of funds by the People's Bank of China.
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Both models have a 170-horsepower compact turbocharged direct-injection 1.8-liter four-cylinder gasoline engine.
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Patients receive them through a direct injection into the vein that leads to the liver.
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Borch is expected to receive the last of a series of shots and injections over the weekend.
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The sequence summed up the series, a third version of Warriors-Cavaliers but the first with a Durant injection.
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Robert Bryant Melson is scheduled to be executed June 8, 2017, in Alabama by lethal injection after being convicted of killing three fast food restaurant employees during a 1994 robbery.
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An injection of youth, defense and versatility would be valuable, and Mitchell could provide some of that.
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.
First Known Use of injection
15th century
INJECTION Defined for English Language Learners
injection
playDefinition of injection for English Language Learners
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: the act or process of forcing a liquid medicine or drug into someone or something by using a special needle
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: the act or process of forcing a liquid into something
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: the addition of something (such as money) that is needed to support something
INJECTION Defined for Kids
injection
playDefinition of injection for Students
: 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.
Medical Dictionary
injection
playMedical Definition of injection
1a: the act or an instance of injecting a drug or other substance into the bodyb: 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 cavityc: 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
Learn More about injection
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See 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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