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 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 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

Dictionary Entries Near neurotransmitter

Cite this Entry

“Neurotransmitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotransmitter. Accessed 22 Jan. 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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