a prayer consisting of a series of petitions by the leader, each of which is followed by a response, usu the same response, from the congregation
(the Litany) a prayer in the Anglican Book of Common Prayer consisting of set petitions and responses
any repetitive recital
Haley relieved himself by repeating over a not very select litany of imprecations on himself — Harriet Beecher Stowe
[Middle English letanie via Old French and late Latin from late Greek litaneia prayer, from Greek litē entreaty, from litanos entreating]