Merriam-Webster Collegiate Dictionary - antistrophe

 noun  Etymology: Late Latin, from Greek antistrophe, from anti- + strophe strophe  Date: circa 1550  1.  a. the repetition of words in reversed order  b. the repetition of a word or phrase at the end of successive clauses  2.  a. a returning movement in Greek choral dance exactly answering to a previous strophe  b. the part of a choral song delivered during the ~  • antistrophic adjective  • antistrophically adverb