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
The neurons in the substantia nigra produce dopamine, which is a neurotransmitter that plays a vital role in controlling movement.
—
Mary Kekatos, ABC News, 23 July 2025
When estrogen levels are stable, these neurotransmitter systems work more efficiently—which helps support mood stability and emotional resilience.
—Lauryn Higgins, Flow Space, 11 July 2025
That artificial sweetener crosses your blood-brain barrier and actually makes the neurotransmitter depletion worse.
—Andrea Margolis, FOXNews.com, 7 July 2025
Alcohol depresses the central nervous system by enhancing the inhibitory neurotransmitter GABA and suppressing the excitatory neurotransmitter glutamate.
—Jesse Pines, Forbes.com, 7 July 2025
See All Example Sentences for neurotransmitter
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Mary Kekatos, ABC News, 23 July 2025
When estrogen levels are stable, these neurotransmitter systems work more efficiently—which helps support mood stability and emotional resilience.
—Lauryn Higgins, Flow Space, 11 July 2025
That artificial sweetener crosses your blood-brain barrier and actually makes the neurotransmitter depletion worse.
—Andrea Margolis, FOXNews.com, 7 July 2025
Alcohol depresses the central nervous system by enhancing the inhibitory neurotransmitter GABA and suppressing the excitatory neurotransmitter glutamate.
—Jesse Pines, Forbes.com, 7 July 2025
See All Example Sentences for neurotransmitter
Cite this Entry
“Neurotransmitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotransmitter. Accessed 30 Jul. 2025.
Copy CitationKids 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share