outness

from The Collaborative International Dictionary of English v.0.48

Outness \Out"ness\, n.
   1. The state of being out or beyond; separateness.
      [1913 Webster]

   2. (Metaph.) The state or quality of being distinguishable
      from the perceiving mind, by being in space, and
      possessing material quality; externality; objectivity.
      [1913 Webster]

            The outness of the objects of sense.  --Sir W.
                                                  Hamilton.
      [1913 Webster]