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adrenaline

[uh-dren-l-in, -een] /əˈdrɛn l ɪn, -ˌin/
noun, Biochemistry, Pharmacology
1.
epinephrine (def 1).
Origin
1900-1905
1900-05; adrenal + -ine1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for adrenaline
  • Elements of space opera, Straubesque horror and adrenaline-laced action make this a demanding, rewarding read.
  • Sometimes the burst of adrenaline you get the night before the deadline is enough to propel you to a successful finish.
  • Human mind networks requires at least 3 kinds of neurotransmitters; adrenaline, serotonin and dopamine.
  • Not all gamers choose games based on how much adrenaline they muster, how elaborate the play is or how realistic the graphics are.
  • Making it onto the initial "longlist" of prospective candidates for a position always gives my job search a shot of adrenaline.
  • My writing was better than it ever had been, and I was on an almost-constant adrenaline rush from making life-and-death decisions.
  • The adrenaline-fueled narrative will keep Johansen fans eagerly turning the pages.
  • The adrenaline rush of downhill skiing is one of winter's greatest highs.
  • As the adrenaline rush of their job-search triumph fades, the questions and uncertainties about the coming year loom large.
  • The study with the swimming rat and the island emphasizes the significance of adrenaline in the formation of memory.
British Dictionary definitions for adrenaline

adrenaline

/əˈdrɛnəlɪn/
noun
1.
a hormone that is secreted by the adrenal medulla in response to stress and increases heart rate, pulse rate, and blood pressure, and raises the blood levels of glucose and lipids. It is extracted from animals or synthesized for such medical uses as the treatment of asthma. Chemical name: aminohydroxyphenylpropionic acid; formula: C9H13NO3 US name epinephrine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for adrenaline
n.

also Adrenalin (trademark name), coined 1901 by Japanese chemist Jokichi Takamine (1853-1922), who discovered it, from Modern Latin adrenal (see adrenal) + chemical suffix -ine (2). Adrenaline rush was in use c.1970.

Online Etymology Dictionary, © 2010 Douglas Harper
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adrenaline in Medicine

adrenaline a·dren·a·line (ə-drěn'ə-lĭn)
n.
See epinephrine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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adrenaline in Science
adrenaline
  (ə-drěn'ə-lĭn)   
See epinephrine.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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adrenaline in Culture
adrenaline [(uh-dren-l-in)]

A hormone secreted by the adrenal glands that helps the body meet physical or emotional stress (see endocrine system).

Note: 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.
Note: Figuratively, the term adrenaline is used in speaking of a high state of excitement: “When the race began, the adrenaline really started pumping.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for adrenaline

two separate but related hormones secreted by the medulla of the adrenal glands. They are also produced at the ends of sympathetic nerve fibres, where they serve as chemical mediators for conveying the nerve impulses to effector organs. Chemically, the two compounds differ only slightly; and they exert similar pharmacological actions, which resemble the effects of stimulation of the sympathetic nervous system. They are, therefore, classified as sympathomimetic agents. The active secretion of the adrenal medulla contains approximately 80 percent epinephrine and 20 percent norepinephrine; but this proportion is reversed in the sympathetic nerves, which contain predominantly norepinephrine.

Learn more about adrenaline with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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