Adrenergic refers to the actions or effects mediated by the neurotransmitters or hormones that activate adrenergic receptors. These receptors are primarily responsive to the catecholamines, which include adrenaline (epinephrine) and norepinephrine.
Unit 7,
Reference: Oxford Concise Medical Dictionary (9th ed) Oxford University Press 2015 ISBN-13: 9780199687817, p781