Standard Lemma guide

norepinephrine

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˌnɔːɹɛpɪˈnɛfɹɪn/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A neurotransmitter found in the locus coeruleus which is synthesized from dopamine.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

Examples

  • For quotations using this term, see Citations:norepinephrine.

Meaning relationships

Synonyms: noradrenaline, levarterenol

Antonyms: none provided

Broader terms: phenethylamine, catecholamine

2

noun

Meaning 2

a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: noradrenaline

Antonyms: none provided

Broader terms: vasoconstrictor, vasoconstrictive, pressor, monoamine neurotransmitter, catecholamine

History

Etymology

From nor- + epinephrine.

Across languages

Translations

14 source translations are retained for this English entry.

  • Catalan: norepinefrina — norepinephrine
  • Czech: noradrenalin — norepinephrine
  • Esperanto: norepinefrino — norepinephrine
  • Finnish: norepinefriini — norepinephrine
  • Finnish: noradrenaliini — norepinephrine
  • Galician: noradrenalina — norepinephrine
  • Galician: simpatina — norepinephrine
  • German: Norepinephrin — norepinephrine
  • Greek: νορεπινεφρίνη (norepinefríni) — norepinephrine
  • Hungarian: norepinefrin — norepinephrine
  • Japanese: ノルエピネフリン (noruepinefurin) — norepinephrine
  • Russian: норэпинефри́н (norɛpinefrín) — norepinephrine
  • Spanish: norepinefrina — norepinephrine
  • Swedish: noradrenalin — norepinephrine