5-hy·droxy·tryp·ta·mine /ˈfaɪvhaɪˌdrɑksɪˈtrɪptəˌmɪn/ 名詞 血清素,血清緊張素,5-羥基色胺
5-hydroxytryptamine n : a neurotransmitter involved in e.g. sleep and depression and memory [syn: serotonin]