adrenaline

Definition of adrenaline

n.1..
1.(Physiol. Chem.) 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.

Related Words

Adrenalin, brand, brand name, catecholamine, endocrine, epinephrin, epinephrine, hormone, internal secretion, marque, neurotransmitter, trade name, vasoconstrictive, vasoconstrictor
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