adrenalin

 
Pronunciation: /əˈdrɛn(ə)lɪn/
(also adrenaline)

noun

[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 adrenalin goingAlso called epinephrine

Origin:

early 20th century: from adrenal + -in1