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Epinephrine

//ˌɛp.ɪˈnɛ.fɹɪn// noun

Definitions

Noun
  1. 1
    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. countable, uncountable

    "At the ER, after deflating me with a cocktail of epinephrine, a steroid and an antihistamine, the doctors scolded me for not coming in more quickly: I could have died of asphyxiation."

  2. 2
    a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action wordnet

Etymology

From Ancient Greek ἐπι- (epi-, “upon”) + νεφρός (nephrós, “kidney”) + -ine.

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