- a miniature epic
C19: from Greek, diminutive of epos
Examples from the Web for epyllion
This is not in any sense a lyric poem, but an epyllion, or little epic.A History of Roman Literature
Harold North Fowler
Other rhetorical devices cultivated in the epyllion are the long apostrophe, and the sentence or wise saying.
Either the term "minor epic" or "epyllion" is satisfactory, provided its referent is clear, and accurately described.