epinephrine

== English == === Etymology === From Ancient Greek ἐπι- (epi-, “upon”) + νεφρός (nephrós, “kidney”) + -ine. === Pronunciation === IPA(key): /ˌɛp.ɪˈnɛ.fɹɪn/ === Noun === epinephrine (countable and uncountable, plural epinephrines) (biochemistry, organic chemistry, medicine) A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. It is also used as a medication. Synonym: adrenaline ==== Synonyms ==== (hormone and neurotransmitter): 4,5-β-trihydroxy-N-methylphenethylamine ==== Hypernyms ==== (hormone): catecholamine (neurotransmitter): monoamine, phenethylamine ==== Derived terms ==== ==== Translations ==== === Further reading === adrenaline on Wikipedia.Wikipedia