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epinephrine

or ep路i路neph路rin

[ ep-uh-nef-rin, -reen ]
/ 藢蓻p 蓹藞n蓻f r瑟n, -rin /
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noun
Also called adrenaline. Biochemistry. a hormone secreted by the adrenal medulla upon stimulation by the central nervous system in response to stress, as anger or fear, and acting to increase heart rate, blood pressure, cardiac output, and carbohydrate metabolism.
Also Trademark, A路dren路al路in [uh-dren-l-in] /蓹藞dr蓻n l 瑟n/ .Pharmacology. a commercial form of this substance, extracted from the adrenal glands of sheep and cattle, or synthesized: used chiefly as a heart stimulant, to constrict the blood vessels, and to relax the bronchi in asthma.

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Origin of epinephrine

First recorded in 1895鈥1900; epi- + Greek nephr(贸s) kidney + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2023

How to use epinephrine in a sentence

British Dictionary definitions for epinephrine

epinephrine

epinephrin

/ (藢蓻p瑟藞n蓻fr瑟n, -ri藧n) /

noun
a US name for adrenaline

Word Origin for epinephrine

C19: from epi- + nephro- + -ine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for epinephrine

epinephrine
[ 臅p鈥采-n臅fr沫n ]

A hormone that is secreted by the adrenal gland in response to physical or mental stress, as from fear, and is regulated by the autonomic nervous system. The release of epinephrine causes an increase in heart rate, blood pressure, and respiratory rate. Epinephrine also raises glucose levels in the blood for use as fuel when more alertness or greater physical effort is needed. Also called adrenaline. Chemical formula: C9H13NO3.
The American Heritage庐 Science Dictionary Copyright 漏 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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