noradrenaline

American  

[nawr-uh-dren-l-in, -een] / ˌnɔr əˈdrɛn l ɪn, -ˌin /

Also noradrenalin

noun

1. norepinephrine.

---

noradrenaline British  

/ ˌnɔːrəˈdrɛnəlɪn, -ˌliːn, -lIn /

noun

1. US name: norepinephrine.  a hormone secreted by the adrenal medulla, increasing blood pressure and heart rate, and by the endings of sympathetic nerves, when it acts as a neurotransmitter both centrally and peripherally. Formula: C 8 H 11 NO 3

---

noradrenaline Scientific  

/ nôr′ə-drĕn′ə-lĭn /

1. See norepinephrine

---

Etymology

Origin of noradrenaline

First recorded in 1930–35; nor- + adrenaline

Compare meaning

How does noradrenaline compare to similar and commonly confused words? Explore the most common comparisons:

• noradrenaline vs. adrenaline

Example Sentences

The neurochemicals involved in this process are different than those mediating habit formation and include a chemical messenger called noradrenaline and internally produced opioids such as endorphins.

From Salon • Oct. 13, 2025

This dip in blood sugar sparks the release of adrenaline and its cousin noradrenaline.

From Salon • Aug. 20, 2024

Additionally, quantitative protein analysis confirmed that the levels of inflammatory cytokines TNF-α and IL-6 were significantly decreased and the levels of neurotransmitters dopamine, noradrenaline, and serotonin were significantly increased in the hippocampus.

From Science Daily • Sep. 22, 2023

They found that the sympathetic nerves were producing noradrenaline, which was binding to killer T cells using a receptor called ADRB1.

From Science Daily • Sep. 20, 2023

The researchers suspect that the first burst of noradrenaline indicates that it plays some part in an animal’s decision to pursue rewards.

From Scientific American • Jul. 29, 2022