noradrenaline

American  

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

Also noradrenalin

noun

1. norepinephrine.

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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

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noradrenaline Scientific  

/ nôr′ə-drĕn′ə-lĭn /

1. See norepinephrine

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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

See Examples For:

noradrenaline

Following immersion in 57-degree water, subjects in one study experienced a 530% increase in plasma noradrenaline, a neurotransmitter associated with euphoria and mental clarity.

From The Wall Street Journal ● Jul. 6, 2026

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

Exhausted killer T cells expressed more ADRB1 receptors than their functional counterparts, allowing the T cells to "listen" to the noradrenaline released by the nerves.

From Science Daily ● Sep. 20, 2023

Then the researchers used their optogenetic off switch to block the release of noradrenaline, and this made the mice even more hesitant.

From Scientific American ● Jul. 29, 2022