epinephrine

noun

epi·​neph·​rine ˌe-pə-ˈne-frən How to pronounce epinephrine (audio)
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 People who have severe allergies carry EpiPens, which quickly deliver epinephrine by injection. Amanda Gardner, Health, 1 June 2024 What is adrenaline? Adrenaline, also known as epinephrine, is a hormone that's usually triggered whenever the body encounters a particularly stressful situation. Daryl Austin, USA TODAY, 8 May 2024 Colorado set a $60 limit on out-of-pocket costs for a two-pack of epinephrine auto-injectors starting this year, but some patients reported pharmacies wouldn’t sell them for that price. Meg Wingerter, The Denver Post, 12 June 2024 Paul Benson was dead a full 10 minutes by the time a shot of epinephrine got his heart to start beating again. Ed Masley, The Arizona Republic, 10 June 2024 See all Example Sentences for epinephrine 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'epinephrine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary epi- + Greek nephros kidney — more at nephritis

First Known Use

1899, in the meaning defined above

Time Traveler
The first known use of epinephrine was in 1899

Dictionary Entries Near epinephrine

Cite this Entry

“Epinephrine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epinephrine. Accessed 22 Jul. 2024.

Kids Definition

epinephrine

noun
ep·​i·​neph·​rine
ˌep-ə-ˈnef-rən
: a hormone of the adrenal gland acting especially on smooth muscle, causing narrowing of blood vessels, and raising blood pressure

called also adrenaline

Medical 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

More from Merriam-Webster on epinephrine

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