Definition of adrenergic in English:



  • Relating to or denoting nerve cells in which adrenaline, noradrenaline, or a similar substance acts as a neurotransmitter.

    Contrasted with cholinergic
    • ‘Activation of the adrenergic system triggers the release of catecholamines, which stimulate contractility, heart rate, and blood pressure.’
    • ‘Neural tissue normally present within the thyroid includes both vasomotor fibers and adrenergic fibers.’
    • ‘Both of these are strong sympathetic stimulants which in turn may increase warmth by stimulating the secretion of adrenergic hormones such as testosterone.’
    • ‘Following alarm or injury, the sympathetic nervous system is activated, adrenergic receptors are stimulated, and the contents of the gland are released to the surface of the skin.’
    • ‘Table 1 demonstrates the ability of these agents to block histaminic, adrenergic, and muscarinic receptors after being corrected for clinical dose.’


1930s: from adrenaline + Greek ergon ‘work’ + -ic.