epic

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An extended narrative poem in elevated or dignified language, celebrating the feats of a legendary or traditional hero.
• noun A literary or dramatic composition that resembles an extended narrative poem celebrating heroic feats.
• noun A series of events considered appropriate to an epic.
• adjective Of, constituting, having to do with, or suggestive of a literary epic.
• adjective Surpassing the usual or ordinary, particularly in scope or size.
• adjective Heroic and impressive in quality.

from The Century Dictionary.

• Pertaining to or constituting an epos or heroic poem; narrating at length and in metrical form as a poetic whole with subordination of parts a series of heroic achievements or of events under supernatural guidance.
• Hence Of heroic character or quality; bold in action; imposing.
• noun A narrative poem of elevated character, describing generally the exploits of heroes; an epic poem. See I.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Narrated in a grand style; pertaining to or designating a kind of narrative poem, usually called an heroic poem, in which real or fictitious events, usually the achievements of some hero, are narrated in an elevated style.
• noun An epic or heroic poem. See epic, a.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An extended narrative poem in elevated or dignified language, celebrating the feats of a deity or demigod (heroic epic) or other legendary or traditional hero.
• noun A series of events considered appropriate to an epic.
• adjective Of, or relating to, an epic.
• adjective Momentously heroic; grand in scale or character
• adjective colloquial, slang, informal Extending beyond the usual or ordinary; extraordinary, momentous, great.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective very imposing or impressive; surpassing the ordinary (especially in size or scale)
• adjective constituting or having to do with or suggestive of a literary epic
• noun a long narrative poem telling of a hero's deeds