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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
One group causes a general toxicity to cells, enabled by disruption of the cell membrane, while a different subset has the ability to block the receptor for a neurotransmitter.
—Ars Technica, 15 Jan. 2025
These moments can trigger positive emotional responses, enhancing the release of neurotransmitters like dopamine, which reinforce motivation and collaboration.
—Scott Hutcheson, Forbes, 14 Jan. 2025
As one of the brain’s primary neurotransmitters, norepinephrine has many functions, and there are several classes of drug that work by modifying the rate at which it is released and reuptaken.
—Tom Hawking, Popular Science, 8 Jan. 2025
Protein deficiency can lead to a reduction in these neurotransmitters, potentially contributing to the development of mood disorders, such as depression.
—Colleen Doherty, Verywell Health, 18 Dec. 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 21 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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