Definition of noradrenaline in English:



mass nounBiochemistry
  • A hormone which is released by the adrenal medulla and by the sympathetic nerves and functions as a neurotransmitter. It is also used as a drug to raise blood pressure.

    Chemical formula: (HO)₂C₆H₃CHOHCH₂NH₂

    • ‘This amino acid fights fatigue by pumping up your levels of the energizing neurotransmitters dopamine, noradrenaline, and adrenaline.’
    • ‘You're shooting adrenaline, noradrenaline, cortisol and the cortico-steroids into the system, which provide instant energy.’
    • ‘The tumor increases production of adrenaline and noradrenaline, raising blood pressure.’
    • ‘To date, we know of approximately 300 substances that act as neurotransmitters, including endorphins, neuropeptides, adrenaline, noradrenaline and acetylcholine.’
    • ‘A stressful situation prompts the body to produce the hormones adrenaline and noradrenaline.’


1930s: from nor- + adrenaline.