Source : Webster's Revised Unabridged Dictionary (1913)

Antistrophe \An*tis"tro*phe\, n. [L., fr. Gr. ?, fr. ? to turn
   to the opposite side; ? against + ? to turn. See {Strophe}.]
   1. In Greek choruses and dances, the returning of the chorus,
      exactly answering to a previous strophe or movement from
      right to left. Hence: The lines of this part of the choral
      song.

            It was customary, on some occasions, to dance round
            the altars whilst they sang the sacred hymns, which
            consisted of three stanzas or parts; the first of
            which, called strophe, was sung in turning from east
            to west; the other, named antistrophe, in returning
            from west to east; then they stood before the altar,
            and sang the epode, which was the last part of the
            song.                                 --Abp. Potter.

   2. (Rhet.)
      (a) The repetition of words in an inverse order; as, the
          master of the servant and the servant of the master.
      (b) The retort or turning of an adversary's plea against
          him.

Source : WordNet®

antistrophe
     n : the section of a choral ode answering a previous strophe in
         classical Greek drama; the second of two metrically
         corresponding sections in a poem