- 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.
Origin of norepinephrine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for norepinephrine
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
December 4, 2011
- the US name for noradrenaline
Word Origin and History for norepinephrine
Online Etymology Dictionary, © 2010 Douglas Harper
- A substance, both a hormone and neurotransmitter, secreted by the adrenal medulla and the nerve endings of the sympathetic nervous system to cause vasoconstriction and increases in heart rate, blood pressure, and the sugar level of the blood.levarterenol noradrenalin
- 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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