1. neurotransmitter

noun. a neurochemical that transmits nerve impulses across a synapse.


  • adrenaline
  • Adrenalin
  • acetylcholine
  • epinephrine
  • gamma aminobutyric acid
  • epinephrin
  • GABA


  • neuro- (English)
  • νευρο- (Ancient Greek (to 1453))
  • transmitter (English)

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Sentences with neurotransmitter

1. Noun, singular or mass
Serotonin is a brain neurotransmitter that is sometimes called the "happiness hormone" and can increase your mood and help you sleep at night.

2. Adjective, comparative
This means the medication works to make the neurotransmitter serotonin more effective inside the person’s brain, which helps to reduce anxiety and depression symptoms.

3. Adjective
The neurotransmitter chemical acetylcholine is an inhibitory neurotransmitter in the SNS, meaning that its presence tends to damp out movements.