Epic

Epic

Noting or pertaining to a poetic composition, usually centered upon a hero, in which a series of great achievements or events is narrated continuously and at length in elevated style. Homer's Iliad is an epic poem.
Originally a poem, an epic became a story that was worthy to form the subject of an epic. The Defence of the Alamo is an American epic. [RA] {BD}
Originally an epic was a long narrative poem about the deeds of a hero or heroes. Later "epic" began to describe any story that had the qualities of an epic poem. [AM] {CL}