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epinephrine

noun epi·neph·rine \ˌe-pə-ˈne-frən\

Definition of epinephrine

  1. :  a colorless crystalline feebly basic sympathomimetic hormone C9H13NO3 that is the principal blood-pressure raising hormone secreted by the adrenal medulla and is used medicinally especially as a heart stimulant, a vasoconstrictor in controlling hemorrhages of the skin, and a muscle relaxant in bronchial asthma —called also adrenaline



Variants of epinephrine

also epi·neph·rin play \ˌe-pə-ˈne-frən\

Origin of epinephrine

International Scientific Vocabulary epi- + Greek nephros kidney — more at nephritis


First Known Use: 1899


EPINEPHRINE Defined for Kids

epinephrine

play
noun ep·i·neph·rine \ˌe-pə-ˈne-frən\

Definition of epinephrine

  1. :  a hormone that causes blood vessels to narrow and the blood pressure to increase




Medical Dictionary

epinephrine

noun epi·neph·rine

Medical Definition of epinephrine

  1. :  a colorless crystalline feebly basic sympathomimetic hormone C9H13NO3 that is the principal blood-pressure-raising hormone secreted by the adrenal medulla, is prepared from adrenal extracts or made synthetically, and is used medicinally especially as a heart stimulant, as a vasoconstrictor (as to treat open-angle glaucoma and life-threatening allergic reactions and to prolong the effects of local anesthetics), and as a bronchodilator—called also adrenaline



Variants of epinephrine

also epi·neph·rin \ˌep-ə-ˈnef-rən\play

Learn More about epinephrine


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