Definition of serotonin in English:

serotonin

noun ˌsɛrəˈtəʊnɪn

Biochemistry

A compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter.
〔生化〕血清素
Alternative name: 5-hydroxytryptamine; chemical formula: C₁₀H₁₂N₂O
Example sentencesExamples
- There is some evidence of that the neurotransmitter serotonin may play a role in this disorder.
- These work by raising the levels of the chemicals serotonin and noradrenaline in the brain, which both tend to elevate the mood.
- These physiological changes decrease patients' pain thresholds and thereby increase pain sensation, anxiety, fear, and the release of pain transmitters, such as histamines, serotonins, kinins, and prostaglandins.
- Tryptophan is an amino acid that serves as a precursor to the neurotransmitter serotonin.
- Both serotonin and noradrenaline are activated in the brain by anxiety-inducing circumstances.

Origin

1940s: from serum + tonic + -in¹.

Rhymes

Cronin, phone-in, ronin

Definition of serotonin in US English:

serotonin

noun

Biochemistry

A compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter.
〔生化〕血清素
Alternative name: 5-hydroxytryptamine; chemical formula: C₁₀H₁₂N₂O
Example sentencesExamples
- Both serotonin and noradrenaline are activated in the brain by anxiety-inducing circumstances.
- These physiological changes decrease patients' pain thresholds and thereby increase pain sensation, anxiety, fear, and the release of pain transmitters, such as histamines, serotonins, kinins, and prostaglandins.
- These work by raising the levels of the chemicals serotonin and noradrenaline in the brain, which both tend to elevate the mood.
- There is some evidence of that the neurotransmitter serotonin may play a role in this disorder.
- Tryptophan is an amino acid that serves as a precursor to the neurotransmitter serotonin.

Origin

1940s: from serum + tonic + -in.

单词	serotonin
释义	Definition of serotonin in English: serotonin noun ˌsɛrəˈtəʊnɪn Biochemistry A compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter. 〔生化〕血清素 Alternative name: 5-hydroxytryptamine; chemical formula: C₁₀H₁₂N₂O Example sentencesExamples There is some evidence of that the neurotransmitter serotonin may play a role in this disorder. These work by raising the levels of the chemicals serotonin and noradrenaline in the brain, which both tend to elevate the mood. These physiological changes decrease patients' pain thresholds and thereby increase pain sensation, anxiety, fear, and the release of pain transmitters, such as histamines, serotonins, kinins, and prostaglandins. Tryptophan is an amino acid that serves as a precursor to the neurotransmitter serotonin. Both serotonin and noradrenaline are activated in the brain by anxiety-inducing circumstances. Origin 1940s: from serum + tonic + -in¹. Rhymes Cronin, phone-in, ronin Definition of serotonin in US English: serotonin noun Biochemistry A compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter. 〔生化〕血清素 Alternative name: 5-hydroxytryptamine; chemical formula: C₁₀H₁₂N₂O Example sentencesExamples Both serotonin and noradrenaline are activated in the brain by anxiety-inducing circumstances. These physiological changes decrease patients' pain thresholds and thereby increase pain sensation, anxiety, fear, and the release of pain transmitters, such as histamines, serotonins, kinins, and prostaglandins. These work by raising the levels of the chemicals serotonin and noradrenaline in the brain, which both tend to elevate the mood. There is some evidence of that the neurotransmitter serotonin may play a role in this disorder. Tryptophan is an amino acid that serves as a precursor to the neurotransmitter serotonin. Origin 1940s: from serum + tonic + -in.
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