1
: liberating, activated by, or involving adrenaline or a substance like adrenaline
an adrenergic nerve
2
: resembling adrenaline especially in physiological action
adrenergic drugs

Examples of adrenergic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For instance, cholinergic nerves [which release a chemical signal called acetylcholine] powerfully drive colon cancer, but those same nerves slow down pancreatic cancer, which is driven by adrenergic nerves [which release adrenaline]. — Ingrid Wickelgren, Scientific American, 14 Feb. 2025 Currently, non-stimulant options are limited to mainly norepinephrine reuptake inhibitors or alpha-2 adrenergic agonists. — New Atlas, 18 Sep. 2024 That inhibition in other areas of the body may be due to SSRIs potentially restricting blood flow by binding to alpha-1 adrenergic receptors, which are found in blood vessels in the skin, brain and more. — Kristen Rogers, CNN, 21 Mar. 2024 In response to neurotransmitters such as adrenaline, adrenergic receptors help to heighten awareness and vitality. — Sponsored Content, The Mercury News, 19 Jan. 2024 Kratom may interact with the brain’s serotonin receptors and adrenergic receptors, which control our fight-or-flight reflexes. — Helen Freund and Kirby Wilson, Sun Sentinel, 6 Mar. 2023 These medications block aspects of the adrenergic system, thus targeting specific mechanisms that alleviate PTSD symptoms. — Neuroskeptic, Discover Magazine, 26 Apr. 2017

Word History

Etymology

adren- + -ergic

First Known Use

1934, in the meaning defined at sense 1

Time Traveler
The first known use of adrenergic was in 1934

Browse Nearby Words

Cite this Entry

“Adrenergic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/adrenergic. Accessed 9 Oct. 2026.

Medical Definition

adrenergic

adjective
1
: liberating or activated by adrenaline or a substance like adrenaline
adrenergic nerve fibers
compare cholinergic sense 1, noradrenergic
2
: resembling adrenaline especially in physiological action
adrenergic drugs
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