auto-injector
noun
au·to-in·ject·or
ˌȯ-tō-in-ˈjek-tər 
variants
or less commonly autoinjector
medical
: a device for injecting oneself with a single, preloaded dose of a drug that typically consists of a spring-loaded syringe activated when the device is pushed firmly against the body
Examples of auto-injector in a Sentence
Recent Examples on the Web
For individuals with a history of severe reactions to other types of stings, experts recommend carrying an epinephrine auto-injector.
—
Sarah Kuta, Smithsonian Magazine, 10 June 2025
If your healthcare provider has not told you otherwise, plan to go to the emergency room after using an epinephrine auto-injector that is prescribed to you.
—Sarah Hudgens, Health, 5 May 2025
At the moment, managing food allergies mostly comes down to strict avoidance and carrying emergency medication like epinephrine auto-injectors (EpiPens) or antihistamines.
—Jenny Lehmann, Discover Magazine, 15 Apr. 2025
Allergy sufferers can also carry an auto-injector to give themselves an emergency shot in case of a life-threatening case of anaphylaxis.
—Breanne Hayes Haney, The Conversation, 14 Apr. 2025
To reinforce Novo’s claim of patent exclusivity, both versions are sold in auto-injectors.
—Arthur L. Kellermann, Forbes.com, 26 Mar. 2025
However, the medication came in single-dose vials, requiring patients to use a traditional syringe instead of the more convenient auto-injector pen that treatment usually comes in.
—Bruce Gil, Quartz, 24 Mar. 2025
Epinephrine auto-injectors can stop a severe allergic reaction from becoming fatal.
—Meg Wingerter, The Denver Post, 12 June 2024
The only treatment to quell the allergic reaction is epinephrine, which historically has been administered through shots or auto-injectors, such as the EpiPen.
—Natallie Rocha, The Mercury News, 7 Mar. 2025
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Sarah Kuta, Smithsonian Magazine, 10 June 2025
If your healthcare provider has not told you otherwise, plan to go to the emergency room after using an epinephrine auto-injector that is prescribed to you.
—Sarah Hudgens, Health, 5 May 2025
At the moment, managing food allergies mostly comes down to strict avoidance and carrying emergency medication like epinephrine auto-injectors (EpiPens) or antihistamines.
—Jenny Lehmann, Discover Magazine, 15 Apr. 2025
Allergy sufferers can also carry an auto-injector to give themselves an emergency shot in case of a life-threatening case of anaphylaxis.
—Breanne Hayes Haney, The Conversation, 14 Apr. 2025
To reinforce Novo’s claim of patent exclusivity, both versions are sold in auto-injectors.
—Arthur L. Kellermann, Forbes.com, 26 Mar. 2025
However, the medication came in single-dose vials, requiring patients to use a traditional syringe instead of the more convenient auto-injector pen that treatment usually comes in.
—Bruce Gil, Quartz, 24 Mar. 2025
Epinephrine auto-injectors can stop a severe allergic reaction from becoming fatal.
—Meg Wingerter, The Denver Post, 12 June 2024
The only treatment to quell the allergic reaction is epinephrine, which historically has been administered through shots or auto-injectors, such as the EpiPen.
—Natallie Rocha, The Mercury News, 7 Mar. 2025
Cite this Entry
“Auto-injector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/auto-injector. Accessed 8 Jul. 2025.
Copy CitationMedical Definition
auto-injector
noun
au·to-in·ject·or
ˌȯ-(ˌ)tō-ˌin-ˈjek-tər
variants
also autoinjector
: a device for injecting oneself with a single, preloaded dose of a drug that typically consists of a spring-loaded syringe activated when the device is pushed firmly against the body
Some parents and health officials say epinephrine auto-injectors should be as common in schools as defibrillators are, so immediate help would be available to any student suffering anaphylaxis …—Noreen S. Ahmed-Ullah, The Chicago Tribune
Noreen S. Ahmed-Ullah, The Chicago TribuneLove words? Need even more definitions?
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