adrenaline

American  

[uh-dren-l-in, -een] / əˈdrɛn l ɪn, -ˌin /

noun

1. Biochemistry. epinephrine.

2. the feeling of excitement, alertness, and intensity caused by the release of epinephrine in the body.

   For adventure seekers, there are ungroomed, off-piste routes with deep snow offering lots and lots of adrenaline.

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adrenaline British  

/ əˈdrɛnəlɪn /

noun

1. US name: epinephrine.  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: C 9 H 13 NO 3

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adrenaline Scientific  

/ ə-drĕn′ə-lĭn /

1. See epinephrine

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adrenaline Cultural  

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

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Discover More

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

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.

Etymology

Origin of adrenaline

First recorded in 1900–05; adrenal + -ine ¹

Compare meaning

How does adrenaline compare to similar and commonly confused words? Explore the most common comparisons:

• epinephrine vs. adrenaline
• noradrenaline vs. adrenaline

Example Sentences

“I tell people, there’s an adrenaline shot to this, to being part of this business. There’s a serious, heavy responsibility that I took over the years.”

From Los Angeles Times

“I had quite a bit of adrenaline, and since I could walk, I drove myself to the hospital.”

From Los Angeles Times

“Once the ball’s snapped, the adrenaline’s pretty good so we’ll hopefully just keep going.”

From Los Angeles Times

As the holidays picked up and as the one-year anniversary of the fire approached, many I’ve talked with are struggling more now than at the beginning when adrenaline fueled the momentum of daily survival.

From Los Angeles Times

But there is the potential for long-term health damage – heart disease, autoimmune problems - linked to "toxic stress", where the body is flooded with hormones like cortisol and catecholamines, which produce adrenaline.

From BBC