epinephrine

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noun epi·neph·rine \ˌe-pə-ˈne-frən\
variants: or less commonly

epinephrin

Definition of epinephrine

  1. :  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

Origin and Etymology of epinephrine

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


First Known Use: 1899


EPINEPHRINE Defined for Kids

epinephrine

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noun ep·i·neph·rine \ˌe-pə-ˈne-frən\

Definition of epinephrine for Students

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


Medical Dictionary

epinephrine

noun epi·neph·rine
variants: also

epinephrin

\ˌep-ə-ˈnef-rən\play

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


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