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

May Impact Neurotransmitters Fiber may also influence the production of neurotransmitters involved in sleep regulation, like serotonin. — Jillian Kubala, Health, 7 July 2026

Neuropeptides Neuropeptides, short for neurotransmitter-inhibiting peptides, are the neurocosmetics with the most scientific backing to anchor their efficacy. — Deanna Pai, Vogue, 6 July 2026

Magnesium helps produce gamma-aminobutyric acid (GABA), a neurotransmitter and brain chemical messenger that reduces nerve activity and helps people feel more relaxed. — Fran Kritz, Verywell Health, 5 July 2026

These drinks nudge the same inhibitory neurotransmitter pathways alcohol acts on but without the depressant effects or the regret the next morning. — Jesse Pines, Forbes.com, 4 July 2026

Word History

First Known Use

1961, in the meaning defined above

Rhymes for neurotransmitter

• babysitter
• bitter
• critter
• fitter
• fritter
• glitter
• hitter
• jitter
• knitter
• litter
• quitter
• ritter

Kids 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