Definitions

from the GNU version of the Collaborative International Dictionary of English.

  • noun .
  • (Physiol. Chem.) a hormone secreted by the adrenal medulla that acts as a powerful stimulant in reponse to fear or stress; it stimulates autonomic nerve action. It can be obtained as a crystalline substance, C9H13NO3. It is used in medicine as a vasoconstrictor (hemostatic) and cardiac stimulant, also to reduce allergic reactions and to stimulate the heart in cases of cardiac arrest.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biochemistry An alternative name for epinephrine; the hormone and neurotransmitter.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From adrenal +‎ -ine.

Examples

  • ‡ Figuratively, the term adrenaline is used in speaking of a high state of excitement: “When the race began, the adrenaline really started pumping.

    adrenaline

  • Then you get to your hotel and your adrenaline is at its zenith and you can't fall asleep.

    Archive: Michael in the mirror

  • As someone pointed out adrenaline is pounding all round and the police know what there is going to be people there just to cause trouble.

    G20 police assault verdict SHOCK! « POLICE INSPECTOR BLOG

  • One can only imagine the heart pounding, blood thumpin ', adrenaline shootin' high, that a man gets when he sees one of these beauty's in the wild outdoors!

    Record Bucks of History

  • One can only imagine the heart pounding, blood thumpin ', adrenaline shootin' high, that a man gets when he sees one of these beauty's in the wild outdoors!

    Record Bucks of History

  • The thrill for the amateur is partly based in adrenaline, and it also lies in the dramatic tradition of the sport.

    Matador for a Day

  • These women, in turn, create men with anger management issues who function best (if at all) in jobs where adrenaline is privileged over reasoned discussion.

    Rescue me from Rescue Me

  • Since there are people who cheer the Clintons on, their adrenaline is high, they will get depressed when it stops so they will go on.

    Exit polls: Nearly half in both states say Wright an issue

  • ` ` The adrenaline is pumping and it's obviously a huge win for our hockey team to come back in the third period and respond after a disappointing outing in Ottawa. ''

    USATODAY.com

  • ` ` I think my adrenaline is going to carry me through the first game. ''

    USATODAY.com

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