Source : Webster's Revised Unabridged Dictionary (1913)

Conspicuous \Con*spic"u*ous\, a. [L. conspicuus, fr. conspicere
   to get sight of, to perceive; con- + spicere, specere, to
   look. See {Spy}]
   1. Open to the view; obvious to the eye; easy to be seen;
      plainly visible; manifest; attracting the eye.

            It was a rock Of alabaster, piled up to the clouds,
            Conspicious far.                      --Milton.

            Conspicious by her veil and hood, Signing the cross,
            the abbess stood.                     --Sir W.
                                                  Scott.

   2. Obvious to the mental eye; easily recognized; clearly
      defined; notable; prominent; eminent; distinguished; as, a
      conspicuous excellence, or fault.

            A man who holds a conspicuous place in the
            political, ecclesiastical, and literary history of
            England.                              --Macaulay.

   Syn: Distinguished; eminent; famous; illustrious; prominent;
        celebrated. See {Distinguished}. -- {Con*spic"u*ous*ly},
        adv. -- {Con*spic"u*ous*ness}, n.

Source : WordNet®

conspicuousness
     n 1: the state of being conspicuous
     2: high visibility [ant: {inconspicuousness}]