What is what does litany means?

Litany is a form of prayer or chant in which a series of invocations or petitions are recited by a leader, with the congregation responding in a set formula. The word "litany" comes from the Latin word "litania", which means prayer or supplication. Litany is often used in religious ceremonies as a way of appealing for divine help or mercy, and can be found in various traditions such as Christianity, Judaism, and Buddhism. It is also used more generally to describe a repetitive or tedious recitation of a list of things, particularly complaints or objections.