The definition of adrenaline is a hormone that causes your heart rate to speed up and gives you more energy.noun
Epinephrine is an example of adrenaline.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
adrenaline - Cultural Definition
A hormone secreted by the adrenal glands that helps the body meet physical or emotional stress (see endocrine system).
- Adrenaline plays a very large role in the fight or flight reaction, which refers to the various processes that occur within the body when it is confronted with some form of mental or physical stress.
- Figuratively, the term adrenaline is used in speaking of a high state of excitement: “When the race began, the adrenaline really started pumping.”
adrenaline - Medical Definition
adrenaline - Science DefinitionThe American Heritage® Science Dictionary
Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Variant of Adrenalin
Origin: adrenal + -in: so named (1901) by J. Takamine, U.S. chemist who first isolated ittrademark for epinephrine
Used by arrangement with John Wiley & Sons, Inc.