|
|
 |
|
|
|
|
| se·ro·to·nin [ sèrrə tṓnin ] |
noun |
|
| Definition: |
| |
neurotransmitter chemical: a chemical derived from the amino acid tryptophan and widely distributed in tissues. It acts as a neurotransmitter, constricts blood vessels at injury sites, and may affect emotional states. C10H12N2O
|
| [Mid-20th century. <sero- + tonic] |
|
|
|
