[nawr-uh-dren-l-in, -een]
Also nor·a·dren·a·lin [nawr-uh-dren-l-in] /ˌnɔr əˈdrɛn l ɪn/.

Origin of noradrenaline

First recorded in 1930–35; nor- + adrenaline Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for noradrenalin


noradrenalin (-lIn)

  1. a hormone secreted by the adrenal medulla, increasing blood pressure and heart rate, and by the endings of sympathetic nerves, when it acts as a neurotransmitter both centrally and peripherally. Formula: C 8 H 11 NO 3US name: norepinephrine
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

noradrenalin in Medicine


  1. norepinephrine
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

noradrenalin in Science


  1. See norepinephrine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.