neu·ro·trans·mit·ter | \ ˌnu̇r-ō-tran(t)s-ˈmi-tər , -tranz- , ˌnyu̇r- \

Definition of neurotransmitter 

: 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

There’s also lofexidine, a non-opioid treatment that reduces the release of norepinephrine, a neurotransmitter that is thought to play a role in many of the symptoms of opioid withdrawal. Houston Chronicle, "How to “live long and prosper”," 7 July 2018 Mothers and daughters, sons and fathers, wrestling with illnesses that surge and recede in waves and cycles, with neurotransmitters the tides. Laura Zera, New York Times, "No One Helped My Mentally Ill Mother, or Me," 22 June 2018 The drug suppresses the release of GABA and thus could restore levels of the neurotransmitter to normal in people with a dangerous taste for alcohol. Bret Stetka, Scientific American, "Scientists Pinpoint Brain Region That May Be Center of Alcohol Addiction," 21 June 2018 Namely, Zylkene—a supplement derived from milk protein that findings suggest can inhibit certain neurotransmitters in the brain, calming nervous activity. Stephanie Eckelkamp, Good Housekeeping, "9 Tips For Keeping Your Pet Calm And Safe During Fireworks," 30 June 2017 In effect, the drugs increase the concentration of serotonin, another neurotransmitter that fascinated Dr. Carlsson. Harrison Smith, Washington Post, "Arvid Carlsson, Nobel laureate who uncovered a treatment for Parkinson’s, dies at 95," 2 July 2018 The Novichok nerve agents cause harm by crippling the action of cholinesterase, an enzyme involved in the normal and essential breakdown of some neurotransmitters. Beth Mole, Ars Technica, "Second Novichok poisoning in Britain raises alarm, questions over contamination," 5 July 2018 Being touched also triggers a rush of the neurotransmitters serotonin, a lack of which has been linked to depression, and dopamine, which regulates pleasure. Cari Romm, The Cut, "The Lasting Damage of Depriving a Child of Human Touch," 20 June 2018 This work also showed that bioelectricity works over long distances, mediated by the neurotransmitter serotonin, Levin said. Adam Rogers, WIRED, "Brainless Embryos Suggest Bioelectricity Guides Growth," 18 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'neurotransmitter.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of neurotransmitter

1961, in the meaning defined above

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Last Updated

3 Sep 2018

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The first known use of neurotransmitter was in 1961

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English Language Learners Definition of neurotransmitter

medical : a substance in the body that carries a signal from one nerve cell to another


neu·ro·trans·mit·ter | \ ˌn(y)u̇r-ō-tran(t)s-ˈmit-ər, -tranz- \

Medical Definition of neurotransmitter 

: a substance (as norepinephrine or acetylcholine) that transmits nerve impulses across a synapse — see false neurotransmitter

More from Merriam-Webster on neurotransmitter Encyclopedia article about neurotransmitter

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occurring twice a year or every two years

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