oxytocin
/ˌɒksɪˈtəʊsɪn/noun
mass noun
- Biochemistry a hormone released by the pituitary gland that causes increased contraction of the womb during labour and stimulates the ejection of milk into the ducts of the breasts【生化】（后叶）催产素。
词源
1920s: from Greek oxutokia 'sudden delivery' （from oxus 'sharp' + tokos 'childbirth'） + -IN1.