re·spon·so·ry 
(rĭ-spŏnsə-rē)
(rĭ-spŏnsə-rē)n. pl. re·spon·so·ries
A chant or anthem recited or sung after a reading in a church service.
[Middle English responsorie, from Late Latin respōnsōrium, from Latin respōnsus, past participle of respondēre, to respond; see RESPOND.]
re·spon·sori·al (-sôrē-əl) adj.