antiphon
/ˈæntɪfən/noun
1- (in traditional Western Christian liturgy) a short sentence sung or recited before or after a psalm or canticle（传统西方基督教礼拜仪式中在赞美诗或诗篇歌前后吟唱或朗诵的）诗句, 启应轮唱的短诗。
1.1
- a musical setting of such a sentence or sentences交替圣歌。
词源
late Middle English: via ecclesiastical Latin from Greek antiphōna 'harmonies'， neuter plural of antiphōnos 'responsive'， from anti 'in return' + phōnē 'sound'.