adrenaline

US /əˈdrɛnəlɪn/

UK /ə'drenəlɪn/

C1
n. (c./u.)Noun (Countable/Uncountable)Chemical in the body that responds to stress, fear
Kate's body released adrenaline when she saw the escaped lion
n. (c./u.)Noun (Countable/Uncountable)The intense excitement and energy felt when in a dangerous or exciting situation.
The dangerous driving gave him an adrenaline rush
n. (c./u.)Noun (Countable/Uncountable)A synthetic form of epinephrine used as a drug to stimulate the heart, increase blood pressure, relax bronchial muscles, and relieve allergic symptoms.
The emergency doctor injected adrenaline to restart the patient's heart

Video subtitles

The Greatest Innovations In Formula One

12:00The Greatest Innovations In Formula One

Is Mars really Red? | #aumsum

06:46Is Mars really Red? | #aumsum

Live / Play

38:01Live / Play

Why do we get Goosebumps? | #aumsum

01:44Why do we get Goosebumps? | #aumsum

Injuries & Being Sick

07:05Injuries & Being Sick

Why You Feel Tired All The Time

04:37Why You Feel Tired All The Time

How to Get Over Your Fear of Public Speaking

02:24How to Get Over Your Fear of Public Speaking