noradrenaline

[ nawr-uh-dren-l-in, -een ]

noun

1. norepinephrine.

noradrenaline

/ -lIn; ˌnɔːrəˈdrɛnəlɪn; -ˌliːn /

noun

1. 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 US namenorepinephrine

noradrenaline

/ nôr′ə-drĕn′ə-lĭn /

1. See norepinephrine

Word History and Origins

Origin of noradrenaline¹

First recorded in 1930–35; nor- + adrenaline

Example Sentences

This effect is probably due to a second neuromodulator, noradrenaline, that’s also being shut off during REM.

From Nautilus

The disappearance of noradrenaline from the brain during REM sleep makes it easy for your brain to wander among its weak associations.

From Nautilus