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English definition of “adrenalin”

adrenalin

noun [U] (also adrenaline)     /əˈdren.əl.ɪn/
a hormone produced by the body when you are frightened, angry, or excited, which makes the heart beat faster and prepares the body to react to danger: These arguments always get my adrenalin going (= make me excited or angry).Animal biochemistry
(Definition of adrenalin noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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