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
In addition, Trump’s order aims to revive elements of his first-term health agenda, including encouraging states to import prescription drugs from Canada, and discounts on insulin and epinephrine for people with low income.
—
Nathaniel Weixel, The Hill, 15 Apr. 2025
May Provide Stress Relief Polyphenols in cocoa may help lower cortisol and epinephrine (adrenaline) stress hormones.
—Ann Pietrangelo, Verywell Health, 14 Apr. 2025
An epinephrine nasal spray is now available, too, which also works very quickly.
—Breanne Hayes Haney, The Conversation, 14 Apr. 2025
Still, despite how frequently medical emergencies occur, the death rate is about 0.3%, the CDC said, adding that medical kits normally include medications such as antihistamine, epinephrine, and lidocaine.
—Saleen Martin, USA TODAY, 15 Jan. 2025
See All Example Sentences for epinephrine
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Nathaniel Weixel, The Hill, 15 Apr. 2025
May Provide Stress Relief Polyphenols in cocoa may help lower cortisol and epinephrine (adrenaline) stress hormones.
—Ann Pietrangelo, Verywell Health, 14 Apr. 2025
An epinephrine nasal spray is now available, too, which also works very quickly.
—Breanne Hayes Haney, The Conversation, 14 Apr. 2025
Still, despite how frequently medical emergencies occur, the death rate is about 0.3%, the CDC said, adding that medical kits normally include medications such as antihistamine, epinephrine, and lidocaine.
—Saleen Martin, USA TODAY, 15 Jan. 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 22 Apr. 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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