Source : Webster's Revised Unabridged Dictionary (1913)

Heroic \He*ro"ic\, a. [F. h['e]ro["i]que, L. hero["i]cus, Gr.
   ?.]
   1. Of or pertaining to, or like, a hero; of the nature of
      heroes; distinguished by the existence of heroes; as, the
      heroic age; an heroic people; heroic valor.

   2. Worthy of a hero; bold; daring; brave; illustrious; as,
      heroic action; heroic enterprises.

   3. (Sculpture & Painting) Larger than life size, but smaller
      than colossal; -- said of the representation of a human
      figure.

   {Heroic Age}, the age when the heroes, or those called the
      children of the gods, are supposed to have lived.

   {Heroic poetry}, that which celebrates the deeds of a hero;
      epic poetry.

   {Heroic} {treatment or remedies} (Med.), treatment or
      remedies of a severe character, suited to a desperate
      case.

   {Heroic verse} (Pros.), the verse of heroic or epic poetry,
      being in English, German, and Italian the iambic of ten
      syllables; in French the iambic of twelve syllables; and
      in classic poetry the hexameter.

   Syn: Brave; intrepid; courageous; daring; valiant; bold;
        gallant; fearless; enterprising; noble; magnanimous;
        illustrious.

Heroic \He*ro"ic\, a. [F. h['e]ro["i]que, L. hero["i]cus, Gr.
   ?.]
   1. Of or pertaining to, or like, a hero; of the nature of
      heroes; distinguished by the existence of heroes; as, the
      heroic age; an heroic people; heroic valor.

   2. Worthy of a hero; bold; daring; brave; illustrious; as,
      heroic action; heroic enterprises.

   3. (Sculpture & Painting) Larger than life size, but smaller
      than colossal; -- said of the representation of a human
      figure.

   {Heroic Age}, the age when the heroes, or those called the
      children of the gods, are supposed to have lived.

   {Heroic poetry}, that which celebrates the deeds of a hero;
      epic poetry.

   {Heroic} {treatment or remedies} (Med.), treatment or
      remedies of a severe character, suited to a desperate
      case.

   {Heroic verse} (Pros.), the verse of heroic or epic poetry,
      being in English, German, and Italian the iambic of ten
      syllables; in French the iambic of twelve syllables; and
      in classic poetry the hexameter.

   Syn: Brave; intrepid; courageous; daring; valiant; bold;
        gallant; fearless; enterprising; noble; magnanimous;
        illustrious.

Source : WordNet®

heroic
     adj 1: very imposing or impressive; surpassing the ordinary
            (especially in size or scale); "an epic voyage"; "of
            heroic proportions"; "heroic sculpture" [syn: {epic},
            {larger-than-life}]
     2: relating to or characteristic of heroes of antiquity;
        "heroic legends"; "the heroic age"
     3: having or displaying qualities appropriate for heroes; "the
        heroic attack on the beaches of Normandy"; "heroic
        explorers" [syn: {heroical}]
     4: impressive in size or scope; "heroic undertakings" [syn: {grand}]
     5: showing extreme courage; especially of actions courageously
        undertaken in desperation as a last resort; "made a last
        desperate attempt to reach the climber"; "the desperate
        gallantry of our naval task forces marked the turning
        point in the Pacific war"- G.C.Marshall; "they took heroic
        measures to save his life" [syn: {desperate}]

heroic
     n : a verse form suited to the treatment of heroic or elevated
         themes; dactylic hexameter or iambic pentameter [syn: {heroic
         verse}, {heroic meter}]