Definition of adrenaline in English:


Line breaks: adren|aline
Pronunciation: /əˈdrɛn(ə)lɪn
(also adrenalin)


[mass noun]
  • A hormone secreted by the adrenal glands that increases rates of blood circulation, breathing, and carbohydrate metabolism and prepares muscles for exertion: performing live really gets your adrenaline going Also called epinephrine.
    More example sentences
    • Chemicals such as adrenaline, noradrenaline and cortisol are pumped into the bloodstream.
    • It is known that adrenalin is the hormone that frees fatty acids of the adipose tissues.
    • This is due to the liberation of the hormone adrenaline at these times.


early 20th century: from adrenal + -ine4.

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a slit made by cutting with a saw