palinodic

from The Century Dictionary.

• In ancient prosody, consisting of four systems, of which the first and fourth are metrically equivalent and the second and third are also metrical equivalents; inserting between a strophe and its antistrophe a strophe and antistrophe of metrically different form (scheme: a b b′ a′ ); pertaining to or characteristic of such an arrangement: as, a palinodic pericope; the palinodic form of composition. See epodic, mesodic, periodic, proodic.