epinephrine
/ˌɛp.ɪˈnɛ.fɹɪn/ noun C2- 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.
Plural epinephrines
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