norepinephrine

[ nawr-ep-uh-nef-rin, -reen ]

noun

Also called noradrenaline. Physiology. a neurotransmitter, released by adrenergic nerve terminals in the autonomic and possibly the central nervous system, that has such effects as constricting blood vessels, raising blood pressure, and dilating bronchi.
Pharmacology. a commercial form of this substance used for emergency treatment of lowered blood pressure.

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Origin of norepinephrine

First recorded in 1940–45; nor- + epinephrine

Words Nearby norepinephrine

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use norepinephrine in a sentence

You have norepinephrine and oxytocin and vasopressin and serotonin, you have this chemical cocktail in your brain that is almost the same chemical cocktail as when you’re in love with someone.
To Keep Workers in Today's Economy, Flexibility Is More Important Than Money | Emma Barker | April 24, 2022 | Time
Key communication molecules such as serotonin, norepinephrine and dopamine can get scrambled when there’s lots of inflammation.
COVID-19 can affect the brain. New clues hint at how | Laura Sanders | April 27, 2021 | Science News
NPY works as a natural tranquilizer that controls anxiety and buffers the effects of stress hormones like norepinephrine.
Inside Seal Team Six by Don Mann Excerpt | Don Mann | December 4, 2011 | THE DAILY BEAST

British Dictionary definitions for norepinephrine

norepinephrine

/ (ˌnɔːrɛpɪˈnɛfrɪn, -riːn) /

noun

the US name for noradrenaline

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for norepinephrine

norepinephrine

[ nôr′ĕp-ə-nĕf′rĭn ]

A substance that acts both as a neurotransmitter and hormone, secreted in the central nervous system, at the nerve endings of the sympathetic nervous system, and by the adrenal gland. Norepinephrine is similar to epinephrine in its physiological effects but acts to regulate regular physiologic activity rather than being released in response to stress. Also called noradrenaline. Chemical formula: C8H11NO3.

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