adrenaline

[uh-dren-l-in, -een]

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.

adrenaline

/ 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

adrenaline

1. See epinephrine

adrenaline

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

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.

Word History and Origins

Origin of adrenaline¹

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

Example Sentences

After what feels like a lifetime, a white SUV appears and the adrenaline begins to rush.

From BBC

"My adrenaline was up... I felt angry," he said.

From BBC

My adrenaline and speed carried me under it, and when I caught it on the run, I shook my arm three times in disbelief.

From Los Angeles Times

They added a rising star in general manager Chad Bowden, who has been an adrenaline shot to the entire program.

From Los Angeles Times

The adrenaline rush, they argue, keeps their brains sharp.

From Los Angeles Times

Related Words

• epinephrine