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.