D defs.my
Entry 2 senses Webster, 1913

Outness

· Out·ness · IPA
01 n. The state of being out or beyond; separateness.
  1. 1.
    The state of being out or beyond; separateness.
  2. 2.
    The state or quality of being distinguishable from the perceiving mind, by being in space, and possessing material quality; externality; objectivity.(Metaph.)
    “The outness of the objects of sense.” Sir W. Hamilton.