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

Walking outdoors is especially helpful as sunlight stimulates the secretion of mood-boosting neurotransmitters serotonin and dopamine, adds Farina. —Noma Nazish, Forbes, 4 Nov. 2024

This type of narcolepsy is often confirmed by a spinal tap showing a lack of the neurotransmitter orexin. —Sandee Lamotte, CNN, 1 Nov. 2024

Manganese is necessary for energy metabolism and immune function, while copper acts as a cofactor for enzymes involved in energy production, neurotransmitter synthesis, iron metabolism, and more.1112 4. —Jillian Kubala, Health, 28 Oct. 2024

To send signals, neurons fill cellular sacs with neurotransmitters; then those sacs fuse with the cell membrane to release the signaling compounds on to the next neuron. —Yasemin Saplakoglu, WIRED, 20 Oct. 2024

Word History

First Known Use

1961, in the meaning defined above

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