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neurotransmitter
noun
neu·ro·trans·mit·ter
ˌnu̇r-ō-tran(t)s-ˈmi-tər
-tranz-,
ˌnyu̇r-
: a substance (such as norepinephrine or acetylcholine) that transmits nerve impulses across a synapse
Examples of neurotransmitter in a Sentence
Recent Examples on the Web
Approach goals activate the brain’s reward system, releasing dopamine, the neurotransmitter associated with motivation and pleasure.
—Scott Hutcheson, Forbes, 28 Dec. 2024
Low magnesium levels may contribute to all headaches by affecting neurotransmitter function and blood flow.
—Chelsea Rae Bourgeois, Rdn, Health, 23 Dec. 2024
As the name suggests, SNRIs work on two specific neurotransmitters: Serotonin and norepinephrine.
—Mary Walrath-Holdridge, USA TODAY, 13 Dec. 2024
Orgasms trigger the release of endorphins, feel-good neurotransmitters that act as natural stress relievers.2 After reaching climax, stress hormone levels—including cortisol and adrenaline—decrease, helping relax your body and mind.
—Lindsay Curtis, Verywell Health, 7 Oct. 2024
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Word History
First Known Use
1961, in the meaning defined above
Dictionary Entries Near neurotransmitter
Cite this Entry
“Neurotransmitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotransmitter. Accessed 6 Jan. 2025.
Kids Definition
neurotransmitter
noun
neu·ro·trans·mit·ter
ˌn(y)u̇r-ō-tran(t)s-ˈmit-ər
-tranz-
: a substance (as acetylcholine) that carries a nerve impulse from one neuron to another across a synapse
Medical Definition
neurotransmitter
noun
neu·ro·trans·mit·ter
ˌn(y)u̇r-ō-tran(t)s-ˈmit-ər, -tranz-
: a substance (as norepinephrine or acetylcholine) that transmits nerve impulses across a synapse see false neurotransmitter
More from Merriam-Webster on neurotransmitter
Britannica.com: Encyclopedia article about neurotransmitter
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