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

Acetylcholine is a neurotransmitter that tells muscles to contract. —New Atlas, 26 May 2025

Dopamine is a neurotransmitter that plays a vital role in regulating movement. —Tom Gavin, EverydayHealth.com, 13 May 2025

Your Serotonin Levels May Increase Serotonin is a neurotransmitter that regulates your mood, behavior, memory, and digestive system. —Maggie O'Neill, Verywell Health, 7 May 2025

One way intermittent fasting may influence libido is through serotonin, a neurotransmitter produced primarily in the gut. —Jenny Lehmann, Discover Magazine, 1 Apr. 2025

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