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
People with a known caffeine allergy who are at risk of anaphylaxis may be prescribed an epinephrine auto-injector (like an EpiPen) to use in case of an emergency.
—
Lindsay Curtis, Health, 10 July 2025
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
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Lindsay Curtis, Health, 10 July 2025
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
Cite this Entry
“Auto-injector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/auto-injector. Accessed 21 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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