neurotransmitter

noun

neu·​ro·​trans·​mit·​ter ˌnu̇r-ō-tran(t)s-ˈmi-tər How to pronounce neurotransmitter (audio)
-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
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.
One of these neurotransmitters is called glutamate. David Oliver, USA Today, 16 May 2025 Low levels of these neurotransmitters can lead to various problems, including anxiety, depression and trouble focusing. Kristen Rogers, CNN Money, 2 Apr. 2025 Depression, Confusion, and Irritability B6 is essential to making certain neurotransmitters and hormones, such as serotonin, which affect brain function and mood. Ann Pietrangelo, Verywell Health, 10 Mar. 2025 TCAs, like amitriptyline (Elavil), are primarily used to treat depression but also work by increasing the levels of certain neurotransmitters like serotonin and norepinephrine in the brain and spinal cord. New Atlas, 22 Apr. 2025 See All Example Sentences for neurotransmitter

Word History

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of neurotransmitter was in 1961

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Cite this Entry

“Neurotransmitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotransmitter. Accessed 21 May. 2025.

Kids Definition

neurotransmitter

noun
neu·​ro·​trans·​mit·​ter ˌn(y)u̇r-ō-tran(t)s-ˈmit-ər How to pronounce neurotransmitter (audio)
-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- How to pronounce neurotransmitter (audio)
: a substance (as norepinephrine or acetylcholine) that transmits nerve impulses across a synapse see false neurotransmitter

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