polyschematic
/ˌpɒlɪskiːˈmatɪk/ /ˌpɒlɪskɪˈmatɪk/Prosody
adjective
Designating a classical metre in which feet not metrically equivalent to the normal ones may be substituted for them; having many metres.
Origin
Late 19th century; earliest use found in The Century Dictionary. From Hellenistic Greek πολυσχήματος composed of various metres (from ancient Greek πολυ- + σχηματ-, σχῆμα) + -ic.