1. epinephrine

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


  • neurotransmitter
  • catecholamine
  • adrenaline
  • Adrenalin
  • pressor
  • endocrine
  • epinephrin
  • vasoconstrictive
  • vasoconstrictor
  • internal secretion


  • exocrine

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Sentences with epinephrine

1. Adjective
If you have had this type of reaction or your doctor thinks this may happen to you, he will prescribe an epinephrine autoinjector, an injection of epinephrine to use in case of emergency.

2. Verb, non-3rd person singular present
Tyrosine is necessary for the synthesis of brain neurotransmitters epinephrine, norepinephrine and dopamine.

3. Noun, singular or mass
However, a cat does that within minutes of receiving the injection, so your vet should be on hand to administer epinephrine to save him.

4. Verb, base form
Norepinephrine, a chemical related to epinephrine, can signal the release of cortisol to prepare the body for long-term stress.