Apparent

a.
  1. Capable of being seen, or easily seen; open to view; visible to the eye; within sight or view.
  2. Clear or manifest to the understanding; plain; evident; obvious; known; palpable; indubitable.
  3. Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming; as the apparent motion or diameter of the sun.
  4. Apparent horizon ,
    the circle which in a level plain bounds our view, and is formed by the apparent meeting of the earth and heavens, as distinguished from the rational horizon.
    Apparent time .
    See Time.
    Heir apparent (Law),
    one whose to an estate is indefeasible if he survives the ancestor; -- in distinction from presumptive heir. See Presumptive.

n.
  1. An heir apparent.