mesodic

from The Century Dictionary.

• In ancient prosody, constituting or pertaining to a colon, line, or system of a different length or metrical character interposed between two cola, two sets of uniform lines, or two systems of identical metrical form; especially, constituting, pertaining to, or containing a system of different form intervening between a strophe and its antistrophe. See epodic,palinodic,periodic, proödic.