Source : Webster's Revised Unabridged Dictionary (1913)

Opportunity \Op`por*tu"ni*ty\, n.; pl. {Opportunities}. [F.
   opportunit['e], L. opportunitas. See {Opportune}.]
   1. Fit or convenient time; a time or place favorable for
      executing a purpose; a suitable combination of conditions;
      suitable occasion; chance.

            A wise man will make more opportunities than he
            finds.                                --Bacon.

   2. Convenience of situation; fitness. [Obs.]

            Hull, a town of great strength and opportunity, both
            to sea and land affairs.              --Milton.

   3. Importunity; earnestness. [Obs.] --Jer. Taylor.

   Syn: Occasion; convenience; occurrence.

   Usage: {Opportunity}, {Occasion}. An occasion is that which
          falls in our way, or presents itself in the course of
          events; an opportunity is a convenience or fitness of
          time, place, etc., for the doing of a thing. Hence,
          occasions often make opportunities. The occasion of
          sickness may give opportunity for reflection.

Source : WordNet®

opportunity
     n : a possibility due to a favorable combination of
         circumstances; "the holiday gave us the opportunity to
         visit Washington"; "now is your chance" [syn: {chance}]