Repetend is a term used in mathematics to describe the repeating sequence in a periodic decimal. Synonyms for the word repetend include recurrence, iterative process, loop, iteration, and recital. Other terms you may come across in mathematics include the period, cycle, and repeating decimal. In music, the term repetend is used to describe a recurring theme or motif in a composition. Synonyms for repetend in this context include refrain, chorus, and recurring phrase. Whatever field you are working in, whether it's mathematics or music, understanding the terminology is essential for effective communication and successful outcomes.