Activated by or capable of releasing epinephrine or an epinephrinelike substance, especially in the sympathetic nervous system: adrenergic nerve fibers.
Having physiological effects similar to those of epinephrine: an adrenergic drug.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.