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
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Adrenaline is a hormone and a neurotransmitter.
—
Antoinette Radford, CNN Money, 24 May 2026
Susie also points to emerging research on the gut-brain axis, which suggests that probiotics from fermented foods may influence mood and anxiety through the production of neurotransmitters and anti-inflammatory compounds.
—Daryl Austin, USA Today, 23 May 2026
Extensive studies have revealed that the lamprey has nerve cells which use dopamine as a neurotransmitter.
—Literary Hub, 13 May 2026
Cold plunges trigger a rapid surge of stress hormones and neurotransmitters that can sharpen focus, lift mood and help recalibrate the body’s stress response.
—Samantha Agate, Charlotte Observer, 6 May 2026
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Antoinette Radford, CNN Money, 24 May 2026
Susie also points to emerging research on the gut-brain axis, which suggests that probiotics from fermented foods may influence mood and anxiety through the production of neurotransmitters and anti-inflammatory compounds.
—Daryl Austin, USA Today, 23 May 2026
Extensive studies have revealed that the lamprey has nerve cells which use dopamine as a neurotransmitter.
—Literary Hub, 13 May 2026
Cold plunges trigger a rapid surge of stress hormones and neurotransmitters that can sharpen focus, lift mood and help recalibrate the body’s stress response.
—Samantha Agate, Charlotte Observer, 6 May 2026
See All Example Sentences for neurotransmitter
Cite this Entry
“Neurotransmitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotransmitter. Accessed 29 May. 2026.
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
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