Source : Webster's Revised Unabridged Dictionary (1913)

Significance \Sig*nif"i*cance\, Significancy \Sig*nif"i*can*cy\,
   n. [L. significantia.]
   1. The quality or state of being significant.

   2. That which is signified; meaning; import; as, the
      significance of a nod, of a motion of the hand, or of a
      word or expression.

   3. Importance; moment; weight; consequence.

            With this brain I must work, in order to give
            significancy and value to the few facts which I
            possess.                              --De Quincey.

Source : WordNet®

significance
     n 1: the quality of being significant; "do not underestimate the
          significance of nuclear power" [ant: {insignificance}]
     2: a meaning that is not expressly stated but can be inferred;
        "the significance of his remark became clear only later";
        "the expectation was spread both by word and by
        implication" [syn: {import}, {implication}]
     3: the message that is intended or expressed or signified;
        "what is the meaning of this sentence"; "the significance
        of a red traffic light"; "the signification of Chinese
        characters"; "the import of his announcement was
        ambigtuous" [syn: {meaning}, {signification}, {import}]