norepinephrine orepinephrine n. A hormone ({C8H11NO3}) secreted by the adrenal medulla; it also serves as a neurotransmitter, released at synapses; called also {noradrenaline}. Chemically it is 2-amino-1-(3,4-dihydroxyphenyl)ethanol. It is a precursor of epinephrine in the body.

Syn: noradrenaline. [WordNet 1.5]

The Collaborative International Dictionary of English. 2000.

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  • Norepinephrine — Norepinephrine[1] …   Wikipedia

  • norepinephrine — (n.) 1868, from NORMAL (Cf. normal) (in reference to molecular structure) + EPINEPHRINE (Cf. epinephrine) …   Etymology dictionary

  • norepinephrine — [nôr′ep΄ə nef′rin, nôr′ep΄ə nef′rēn΄] n. [see NOR ] a hormone or neurotransmitter, C8H11NO3, related to epinephrine, that is used medically to constrict blood vessels and to stop bleeding: it is secreted by the adrenal medulla or liberated at… …   English World dictionary

  • Norépinéphrine — Noradrénaline Noradrénaline Structure chimique de la noradrénaline Général …   Wikipédia en Français

  • norepinephrine — /nawr ep euh nef rin, reen/, n. 1. Also called noradrenaline. Physiol. a neurotransmitter, released by adrenergic nerve terminals in the autonomic and possibly the central nervous system, that has such effects as constricting blood vessels,… …   Universalium

  • norepinephrine — A chemical made by some nerve cells and in the adrenal gland. It can act as both a neurotransmitter (a chemical messenger used by nerve cells) and a hormone (a chemical that travels in the blood and controls the actions of other cells or organs) …   English dictionary of cancer terms

  • norepinephrine — noun Date: 1945 a monoamine C8H11NO3 that is a neurotransmitter in postganglionic neurons of the sympathetic nervous system and in some parts of the central nervous system, is a vasopressor hormone of the adrenal medulla, and is a precursor of… …   New Collegiate Dictionary

  • norepinephrine — See noradrenaline …   Dictionary of molecular biology

  • norepinephrine — noun A neurotransmitter found in the locus coeruleus which is synthesized from dopamine. Syn: noradrenaline See Also: epinephrine …   Wiktionary

  • norepinephrine — l (−) α (aminomethyl) 3,4 dihydroxybenzyl alcohol; a catecholamine hormone of which the natural form is d, although the l form has some activity; the base is considered to be the postganglionic adrenergic mediator, acting on α and β receptors; it …   Medical dictionary

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