epinephrine
noun
epi·neph·rine
ˌe-pə-ˈne-frən 
variants
or less commonly epinephrin
: a crystalline sympathomimetic hormone C9H13NO3 that is the principal blood-pressure raising hormone secreted by the medulla of the adrenal glands, is prepared from adrenal extracts or made synthetically, and is used medicinally especially to stimulate the heart during cardiac arrest and to treat life-threatening allergic reactions
called also adrenaline
Examples of epinephrine in a Sentence
Recent Examples on the Web
Patients are typically administered epinephrine, an adrenaline treatment.
—
Cara Lynn Shultz, People.com, 24 Apr. 2025
The complaint says the hospital failed to administer epinephrine promptly and lacked pediatric intubation equipment.
—Real-Time News Team, Miami Herald, 11 Apr. 2025
Anaphylaxis needs to be treated promptly with a shot of epinephrine—a hormone that's also called adrenaline.
—Sarah Hudgens, Health, 5 May 2025
The ambulance crew performed approximately ten minutes of chest compressions, administered two doses of epinephrine, and delivered multiple Automated External Defibrillator shocks.
—Greg Norman, FOXNews.com, 25 Apr. 2025
See All Example Sentences for epinephrine
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Cara Lynn Shultz, People.com, 24 Apr. 2025
The complaint says the hospital failed to administer epinephrine promptly and lacked pediatric intubation equipment.
—Real-Time News Team, Miami Herald, 11 Apr. 2025
Anaphylaxis needs to be treated promptly with a shot of epinephrine—a hormone that's also called adrenaline.
—Sarah Hudgens, Health, 5 May 2025
The ambulance crew performed approximately ten minutes of chest compressions, administered two doses of epinephrine, and delivered multiple Automated External Defibrillator shocks.
—Greg Norman, FOXNews.com, 25 Apr. 2025
See All Example Sentences for epinephrine
Cite this Entry
“Epinephrine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epinephrine. Accessed 10 Jun. 2025.
Copy CitationMedical Definition
epinephrine
noun
epi·neph·rine
variants
also epinephrin
: a colorless crystalline sympathomimetic hormone C9H13NO3 that is the principal blood-pressure-raising hormone secreted by the adrenal medulla, is prepared from adrenal extracts or made synthetically, and is used medicinally especially to stimulate the heart during cardiac arrest and to treat life-threatening allergic reactions
called also adrenaline
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