Definition of "epic"

epic¹

/ˈɛp.ɪk/

noun
plural epics
1. An extended narrative poem in elevated or dignified language, celebrating the feats of a deity, demigod (heroic epic), other legend or traditional hero.
2. A series of events considered appropriate to an epic.
3. (software engineering) A large or extended user story.
  Quotations
  Epics are shown in a separate list from user stories. This is because it is the user stories that are developed, not epics. Epics are decomposed into child user stories.
  2019, Leslie Munday, Using Agile In A Quality Driven Environment, page 56
adjective
comparative more epic, superlative most epic
1. Of or relating to an epic.
  Quotations
  The main theme of epic poetry is, of course, the hero, his life, his greatness of character, his deeds and his death.
  1983, Jan Knappert, Epic Poetry in Swahili and other African Languages, page 58
2. Momentously heroic; grand in scale or character
  Quotations
  China's epic traffic jam "vanished" [title of article]
  2010 August 25, Agence France-Presse, “China's epic traffic jam 'vanished'”, in Google News‎, archived from the original on 28 August 2010
3. (colloquial, slang, informal) Extending beyond the usual or ordinary.
  Quotations
  Then tell him his daughter's an epic shag.
  2018, Anthony McCarten, Bohemian Rhapsody (motion picture), spoken by Freddie Mercury (Rami Malek)

epic²

/ˈɛp.ɪk/

adjective
not comparable
1. (category theory, of a morphism) That is an epimorphism.