injection
noun
in·jec·tion
in-ˈjek-shən 
1
a
: 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
Central to the strategy is a massive financial injection, beginning with a KRW200 billion ($140 million) animation fund launching this year that will expand to KRW1.5 trillion ($1 billion) by 2029.
—
Naman Ramachandran, Variety, 25 Apr. 2025
While Sawiris and Edens have overseen significant investment in their time at Villa Park, more recent capital injections have come from elsewhere.
—Chris Weatherspoon, New York Times, 24 Apr. 2025
If the cat does have diabetes, then she can be started on insulin injections and appropriate diet.
—Dr. John De Jong, Boston Herald, 20 Apr. 2025
The countries have benefitted from injections of cold hard cash into moribund economies.
—Meehika Barua, HubSpot, 18 Apr. 2025
See All Example Sentences for injection
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Naman Ramachandran, Variety, 25 Apr. 2025
While Sawiris and Edens have overseen significant investment in their time at Villa Park, more recent capital injections have come from elsewhere.
—Chris Weatherspoon, New York Times, 24 Apr. 2025
If the cat does have diabetes, then she can be started on insulin injections and appropriate diet.
—Dr. John De Jong, Boston Herald, 20 Apr. 2025
The countries have benefitted from injections of cold hard cash into moribund economies.
—Meehika Barua, HubSpot, 18 Apr. 2025
See All Example Sentences for injection
Cite this Entry
“Injection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/injection. Accessed 30 Apr. 2025.
Copy CitationKids Definition
injection
noun
in·jec·tion
in-ˈjek-shən
1
: an act or instance of injecting
2
: something (as a medical drug) that is injected
Medical Definition
injection
noun
in·jec·tion
in-ˈjek-shən
1
a
: 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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