variants:
or less commonly epinephrin
Definition of epinephrine
: a crystalline sympathomimetic hormone C9H13NO3 that is the principal blood-pressure raising hormone secreted by the medulla of the adrenal glands, is prepared from adrenal extracts or made synthetically, and is used medicinally especially to stimulate the heart during cardiac arrest and to treat life-threatening allergic reactions
— called also adrenaline
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Time Traveler for epinephrine
The first known use of epinephrine was in 1899
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