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
One group was administered an additional daily injection of lixisenatide for 12 months, while the other group received a placebo.
—
Erin Clack, Peoplemag, 6 Apr. 2024
Miller, who survived a 2022 lethal injection attempt, filed a lawsuit this week to block the nitrogen execution, arguing the first execution under the new method caused cruel and prolonged suffering.
—Corky Siemaszko, NBC News, 4 Apr. 2024
Botox injections may ease pain but have raised concerns about bone loss during animal testing.
—Anna Werner, CBS News, 4 Apr. 2024
Many methods are also ever-improving: IUDs, implants, and injections now have longer lifespans and are easier to insert and remove; doses of hormonal contraception have dramatically decreased.
—Katherine J. Wu, The Atlantic, 3 Apr. 2024
Idaho’s lethal injection protocol calls for a 5-gram lethal dose of pentobarbital to be split between two syringes.
—Kevin Fixler, Idaho Statesman, 26 Mar. 2024
Bard, Colorado’s primary closer in 2022, had arthroscopic surgery on his left knee in mid-February and had PRP (platelet-rich plasma) injections in his right forearm during the offseason.
—Patrick Saunders, The Denver Post, 25 Mar. 2024
One argument for the current seasonal window is that giving a vaccine or a monoclonal antibody injection too early might mean recipients miss out on protection at the end of the season, Karen Acker, a pediatrician at Weill Cornell, told me.
—Katherine J. Wu, The Atlantic, 29 Mar. 2024
Among the other tools rolled out on Thursday are prompt shields, which block attacks on generative AI models, like prompt injections or malicious prompts from external documents that steer models away from training and safety guardrails.
—Rocio Fabbro, Quartz, 29 Mar. 2024
Erin Clack, Peoplemag, 6 Apr. 2024
Miller, who survived a 2022 lethal injection attempt, filed a lawsuit this week to block the nitrogen execution, arguing the first execution under the new method caused cruel and prolonged suffering.
—Corky Siemaszko, NBC News, 4 Apr. 2024
Botox injections may ease pain but have raised concerns about bone loss during animal testing.
—Anna Werner, CBS News, 4 Apr. 2024
Many methods are also ever-improving: IUDs, implants, and injections now have longer lifespans and are easier to insert and remove; doses of hormonal contraception have dramatically decreased.
—Katherine J. Wu, The Atlantic, 3 Apr. 2024
Idaho’s lethal injection protocol calls for a 5-gram lethal dose of pentobarbital to be split between two syringes.
—Kevin Fixler, Idaho Statesman, 26 Mar. 2024
Bard, Colorado’s primary closer in 2022, had arthroscopic surgery on his left knee in mid-February and had PRP (platelet-rich plasma) injections in his right forearm during the offseason.
—Patrick Saunders, The Denver Post, 25 Mar. 2024
One argument for the current seasonal window is that giving a vaccine or a monoclonal antibody injection too early might mean recipients miss out on protection at the end of the season, Karen Acker, a pediatrician at Weill Cornell, told me.
—Katherine J. Wu, The Atlantic, 29 Mar. 2024
Among the other tools rolled out on Thursday are prompt shields, which block attacks on generative AI models, like prompt injections or malicious prompts from external documents that steer models away from training and safety guardrails.
—Rocio Fabbro, Quartz, 29 Mar. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'injection.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near injection
Cite this Entry
“Injection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/injection. Accessed 18 Apr. 2024.
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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