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

How Nicotine Affects the Body Nicotine is a highly addictive stimulant that prompts the brain’s reward center to release the neurotransmitter dopamine, triggering feelings of pleasure and improving mood. —Erica Sweeney, EverydayHealth.com, 11 Mar. 2026

For example, it's involved in regulating organ systems, maintaining immunity and metabolism, and ensuring the function of hormones and neurotransmitters, Pasquariello says. —Kirsten Nunez, Martha Stewart, 7 Mar. 2026

Estrogen plays a critical role in regulating dopamine, the neurotransmitter central to attention, memory, and motivation. —Sarah Oreck, SELF, 2 Mar. 2026

Lentils are high in folate, a key nutrient in the production of neurotransmitters that may support mood and mental clarity. —Virginia Willis, AJC.com, 22 Feb. 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