epinephrine.
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.
Meaning & usage
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.
Where this word comes from
Etymology tree Proto-Indo-European *h₁ep-der. Proto-Indo-European *h₁épsder. Proto-Indo-European *h₁épi Proto-Hellenic *epí Ancient Greek ἐπί (epí) Ancient Greek ἐπῐ- (epĭ-) Proto-Indo-European *negʷʰrós Proto-Hellenic *nekʷʰrós Ancient Greek νεφρός (nephrós) Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English epinephrine From Ancient Greek ἐπι- (epi-, “upon”) + νεφρός (nephrós, “kidney”) + -ine.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.