Meaning of the word adrenaline in English

What does adrenaline mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

adrenaline

US /əˈdren·əl·ən, -ˌin/
UK /əˈdren.əl.ɪn/
"adrenaline" picture

Noun

a hormone secreted by the adrenal glands, especially in conditions of stress, increasing rates of blood circulation, breathing, and carbohydrate metabolism and preparing muscles for exertion.

Example:
The sudden fright caused an immediate rush of adrenaline.
Extreme sports enthusiasts often seek the rush of adrenaline.
Synonym: