Merriam-Webster Collegiate Dictionary - litany

 noun  (plural -nies)  Etymology: Middle English letanie, from Anglo-French & Late Latin; Anglo-French, from Late Latin litania, from Late Greek litaneia, from Greek, entreaty, from litanos suppliant  Date: 13th century  1. a prayer consisting of a series of invocations and supplications by the leader with alternate responses by the congregation  2.  a. a resonant or repetitive chant a ~ of cheering phrases — Herman Wouk  b. a usually lengthy recitation or enumeration a familiar ~ of complaints  c. a sizable series or set a ~ of problems