Definitions for "Adrenalin"
a hormone secreted by the adrenal medulla that acts as a powerful stimulant in reponse to fear or stress; it stimulates autonomic nerve action. It can be obtained as a crystalline substance, C9H13NO3. It is used in medicine as a vasoconstrictor (hemostatic) and cardiac stimulant, also to reduce allergic reactions and to stimulate the heart in cases of cardiac arrest.
A drug that is used to increase the blood pressure, heart rate and force of contraction of the heart. This results in an increase in cardiac output from the heart. Injection of adrenalin, which is also known as epinephrine, may cause an irregularity of the heartbeat or an arrhythmia.
A trade name for the hormone epinephrine.