impressiveness

from WordNet (r) 3.0 (2006)

impressiveness
    n 1: splendid or imposing in size or appearance; "the grandness
         of the architecture"; "impressed by the richness of the
         flora" [syn: {impressiveness}, {grandness}, {magnificence},
         {richness}]
    2: the quality of making a strong or vivid impression on the
       mind

from The Collaborative International Dictionary of English v.0.48

Impressive \Im*press"ive\ ([i^]m*pr[e^]s"[i^]v), a. [Cf. F.
   impressif.]
   1. Making, or tending to make, an impression; having power to
      impress; adapted to excite attention and feeling, to touch
      the sensibilities, or affect the conscience; as, an
      impressive discourse; an impressive scene.
      [1913 Webster]

   2. Capable of being impressed. [Obs.] --Drayton. --
      {Im*press"ive*ly}, adv. -- {Im*press"ive*ness}, n.
      [1913 Webster]