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

What does adrenaline do to the body? Most commonly activated in the hypothalamus area of the brain, adrenaline gets released through neurotransmitters that send a signal down to the adrenal glands, which sit atop each kidney. —Daryl Austin, USA TODAY, 7 May 2024

These impulses tend to travel along similar pathways and release tiny chemicals called neurotransmitters along the way. —Jennifer Robinson, The Conversation, 6 May 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