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

Nicotine dependence alters brain chemistry by stimulating neurotransmitters like dopamine that govern mood and pleasure, according to Cleveland Clinic. — Khloe Quill, FOXNews.com, 24 Sep. 2026

Activation of these receptors also influences the release of other neurotransmitters, including dopamine, which plays an important role in reward and reinforcement. — Hasmeena Kathuria, The Conversation, 22 Sep. 2026

The neurotransmitter acetylcholine works in balance with dopamine – a neurotransmitter produced by the neurons that are lost in Parkinson’s disease. — Mike McRae 10, New Atlas, 10 Sep. 2026

These prescription stimulants can sharpen focus by prompting the brain to release more neurotransmitters such as dopamine and norepinephrine, which play an important role in the body’s fight-or-flight response. — Jen Christensen, CNN Money, 29 Aug. 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